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1. The act of measuring or the process of being measured.
2. A system of measuring: measurement in miles.
3. The dimension, quantity, or capacity determined by measuring: the measurements of a room.



When You KnowMultiply ByTo Find
fluid ounces29.57milliliters
pints (liquid)0.47liters (liquid)
quarts (liquid)0.95liters (liquid)
cubic feet0.028cubic meters
cubic yards0.76cubic meters
short tons (2,000 lbs)0.91metric tons
square inches6.45square centimeters
square feet0.09square meters
square yards0.84square meters
square miles2.59square kilometers


When You KnowMultiply ByTo Find
 0.03fluid ounces
liters (liquid)1.06quarts (liquid)
 2.12pints (liquid)
cubic meters35.31cubic feet
 1.35cubic yards
metric tons (1,000 kg)1.10short tons
square centimeters0.155square inches
square meters1.20square yards
square kilometers0.39square miles


°C = (°F - 32) ÷ 1.8
°F = (°C × 1.8) + 32


The International System (abbreviated SI, for Système International, the French name for the system) was adopted in 1960 by the 11th General Conference on Weights and Measures. An expanded and modified version of the metric system, the International System addresses the needs of modern science for additional and more accurate units of measurement. The key features of the International System are decimalization, a system of prefixes, and a standard defined in terms of an invariable physical measure.


The International System has base units from which all others in the system are derived. The standards for the base units, except for the kilogram, are defined by unchanging and reproducible physical occurences. For example, the meter is defined as the distance traveled by light in a vacuum in 1/299,792,458 of a second. The standard for the kilogram is a platinum-iridium cylinder kept at the International Bureau of Weights and Standards in Sèvres, France.

UnitQuantity Symbol
meter length m
kilogram mass kg
second time s
ampere electric current A
kelvin temperature K
mole amount of matter mol
candela luminous intensity cd


A multiple of a unit in the International System is formed by adding a prefix to the name of that unit. The prefixes change the magnitude of the unit by orders of ten from 1024 to 10-24.

PrefixSymbolMultiplying Factor
yotta- Y 1024 = 1,000,000,000,000,000,000,000,000
zetta- Z 1021 = 1,000,000,000,000,000,000,000
exa- E 1018 = 1,000,000,000,000,000,000
peta- P1015 = 1,000,000,000,000,000
tera- T 1012 = 1,000,000,000,000
giga- G 109 = 1,000,000,000
mega- M 106 = 1,000,000
kilo- k 103 = 1,000
hecto- h 102 = 100
deca- da 10 = 10
deci- d 10-1 = 0.1
centi- c 10-2 = 0.01
milli- m 10-3 = 0.001
micro- μ 10-6 = 0.000,001
nano- n 10-9 = 0.000,000,001
pico- p 10-12 = 0.000,000,000,001
femto- f 10-15 = 0.000,000,000,000,001
atto- a 10-18 = 0.000,000,000,000,000,001
zepto- z 10-21 = 0.000,000,000,000,000,000,001
yocto- y 10-24 = 0.000,000,000,000,000,000,000,001


Most of the units in the International System are derived units, that is units defined in terms of base units and supplementary units. Derived units can be divided into two groups—those that have a special name and symbol, and those that do not.

Measure ofDerivation
acceleration m/s2
angular acceleration rad/s2
angular velocity rad/s
density kg/m3
electric field strength V/m
luminance cd/m2
magnetic field strength A/m
velocity m/s

UnitMeasure ofSymbolDerivation
coulomb electric charge C A·s
farad electric capacitance F A·s/V
henry inductance H V·s/A
hertz frequency Hz cycles/s
joule quantity of energy J N·m
lumen flux of light lm cd·sr
lux illumination lx lm/m2
newton force N kg·m/s2
ohm electric resistance ΩV/A
pascal pressure Pa N/m2
tesla magnetic flux density T Wb/m2
volt voltage V W/A
watt power W J/s
weber magnetic flux Wb V·s

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


1. the act or process of measuring
2. an amount, extent, or size determined by measuring
3. a system of measures based on a particular standard
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈmɛʒ ər mənt)

1. the act of measuring.
2. a measured dimension.
3. extent, size, etc., ascertained by measuring.
4. a system of measuring or measures: liquid measurement.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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A method for determining quantity, capacity, or dimension. All systems of measurement use units whose amounts have been arbitrarily set and agreed upon by a group of people. Several systems of measurement are in common use, notably the United States Customary System and the metric system. The metric system has been officially adopted as the international standard for use in science, providing scientists all over the world with an efficient way of comparing the results of experiments conducted at different times and in different places.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


See also instruments.

the measurement of the relative amount of acetic acid in a given subtance. — acetimetrical, adj.
Chemistry. the determination of the amount of free acid in a liquid. — acidimeter, n. — acidimetrical, adj.
measurement of pain by means of an algometer.
the measurement of evaporation in the air. — atmidometer, n.
1. the measurement of oneself.
2. the measurement of a part of a figure as a fraction of the total figure’s height. — autometric, adj.
the measurement of distance or lines by means of a stave or staff.
the science of land surveying.
accurate measurement of short intervals of time by means of a chronoscope. — chronoscopic, adj.
the science of measuring the universe.
the measurement of extremely low temperatures, by means of a cryometer.
the measurement of circles.
the measurement by a dosimeter of the dosage of radiation a per-son has received. See also drugs. — dosimetrist, n. — dosimetric, dosimetrical, adj.
measurement of the red blood cells in the blood, by use of an erythrocytometer.
the science of measuring and analyzing gases by means of a eudiometer.
the measurement of fluorescence, or visible radiation, by means of a fluorometer. — fluorometric, adj.
the measurement of the strength of electric currents, by means of a galvanometer. — galvanometric, galvanometrical, adj.
the measurement of the amounts of the gases in a mixture. — gasometer, n. — gasometric, gasometrical, adj.
the practice or theory of measuring angles, especially by means of a goniometer.
the measurement of the dimensions and angles of the planes of salt crystals. — halometer, n.
the practice of measuring the angular distance between stars by means of a heliometer. — heliometric, heliometrical, adj.
the art or science of measuring time. — horometrical, adj.
the measurement of altitude and heights, especially with refer-ence to sea level. — hypsometric, hypsometrical, adj.
the practice and art of determining the strength and coloring power of an indigo solution.
equality of measure. — isometric, isometrical, adj.
the measurement of impurities in the air by means of a konimeter. — konimetric, adj.
1. the measuring and recording of variations in fluid pressure, as blood pressure.
2. the measuring and recording of the angular oscillations of an aircraft in flight, with respect to an axis or axes flxed in space. — kymograph, n. — kymographic, adj.
Rare. an instrument for measuring large objects. See also geography.
1. the act, process, or science of measurement.
2. the branch of geometry dealing with measurement of length, area, or volume. — mensurate, mensurational, adj.
the study and science of measures and weights. — metrologist, n. — metrological, adj.
the measurement of osmotic pressure, or the force a dissolved substance exerts on a semipermeable membrane through which it cannot pass when separated by it from a pure solvent. — osmometric, adj.
the measurement of bones.
the determination or estimation of the quantity of oxide formed on a substance. — oxidimetric, adj.
Obsolete, the realm of geometrical measurements, taken as a whole. — pantometer, n. — pantometric, pantometrical, adj.
the measurement of pressure or compressibility, as with a piezometer. — piezometric, adj.
the measurement of the plasticity of materials, as with a plastometer. — plastometric, adj.
the measurement of the capacity of the lungs. — pulmometer, n.
the measurement of temperatures greater than 1500 degrees Celsius. — pyrometer, n. — pyrometric, pyrometrical, adj.
the measurement of radiant energy by means of a radiometer. — radiometric, adj.
the measurement of electric current, usually with a galvanometer. — rheometric, adj.
a means of surveying in which distances are measured by reading intervals on a graduated rod intercepted by two parallel cross hairs in the telescope of a surveying instrument. — stadia, adj.
1. the process of determining the volume and dimensions of a solid.
2. the process of determining the specific gravity of a liquid. — stereometric, adj.
the measurement of distance, height, elevation, etc., with a tachymeter.
the science or use of the telemeter; long-distance measurement.
the measurement of the turbidity of water or other fluids, as with a turbidimeter. — turbidimetric, adj.
measurement of the specific gravity of urine, by means of an urinometer.
the measurement of the volume of a solid body by means of a volumenometer.
the measurement of the volume of solids, gases, or liquids; volumetric analysis. — volumetric, volumetrical, adj.
the measurement and comparison of the sizes of animals and their parts. — zoometric, adj.
-Ologies & -Isms. Copyright 2008 The Gale Group, Inc. All rights reserved.


1. 'measurement'

A measurement is a result obtained by measuring something.

Check the measurements carefully.
Every measurement was exact.
2. 'measure'

You do not use 'measurement' to refer to an action taken by a government. The word you use is measure.

Measures had been taken to limit the economic decline.
Day nurseries were started as a war-time measure to allow mothers to work.
Collins COBUILD English Usage © HarperCollins Publishers 1992, 2004, 2011, 2012
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.measurement - the act or process of assigning numbers to phenomena according to a rulemeasurement - the act or process of assigning numbers to phenomena according to a rule; "the measurements were carefully done"; "his mental measurings proved remarkably accurate"
activity - any specific behavior; "they avoided all recreational activity"
seismography - the measurement of tremors and shocks and undulatory movements of earthquakes
quantitative analysis, quantitative chemical analysis - chemical analysis to determine the amounts of each element in the substance
actinometry - measuring the intensity of electromagnetic radiation (especially of the sun's rays)
algometry - measuring sensitivity to pain or pressure
anemography - recording anemometrical measurements
anemometry - measuring wind speed and direction
angulation - the precise measurement of angles
anthropometry - measurement and study of the human body and its parts and capacities
arterial blood gases - measurement of the pH level and the oxygen and carbon dioxide concentrations in arterial blood; important in diagnosis of many respiratory diseases
audiometry - measuring sensitivity of hearing
bathymetry, plumbing - measuring the depths of the oceans
calorimetry - measurement of quantities of heat
cephalometry - measurement of human heads
densitometry - measuring the optical density of a substance by shining light on it and measuring its transmission
dosimetry - measuring the dose of radiation emitted by a radioactive source
fetometry, foetometry - measurement of a fetus (especially the diameter of the head)
gravimetry, hydrometry - the measurement of specific gravity
hypsometry, hypsography - measurement of the elevation of land above sea level
mental measurement - a generic term used to cover any application of measurement techniques to the quantification of mental functions
micrometry - measuring with a micrometer
observation - the act of making and recording a measurement
pelvimetry - measurement of the dimensions of the bony birth canal (to determine whether vaginal birth is possible)
photometry - measurement of the properties of light (especially luminous intensity)
quantification - the act of discovering or expressing the quantity of something
radioactive dating - measurement of the amount of radioactive material (usually carbon 14) that an object contains; can be used to estimate the age of the object
meter reading, reading - the act of measuring with meters or similar instruments; "he has a job meter reading for the gas company"
sampling - measurement at regular intervals of the amplitude of a varying waveform (in order to convert it to digital form)
sounding - the act of measuring depth of water (usually with a sounding line)
sound ranging - locating a source of sound (as an enemy gun) by measurements of the time the sound arrives at microphones in known positions
scaling - act of measuring or arranging or adjusting according to a scale
spirometry - the use of a spirometer to measure vital capacity
surveying - the practice of measuring angles and distances on the ground so that they can be accurately plotted on a map; "he studied surveying at college"
telemetry - automatic transmission and measurement of data from remote sources by wire or radio or other means
thermometry - the measurement of temperature
thermogravimetry - the measurement of changes in weight as a function of changes in temperature used as a technique of chemically analyzing substances
tonometry - the measurement of intraocular pressure by determining the amount of force needed to make a slight indentation in the cornea
viscometry, viscosimetry - the measurement of viscosity
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


1. size, length, dimension, area, amount, weight, volume, capacity, extent, height, depth, width, magnitude, amplitude Some of the measurements are doubtless inaccurate.
2. calculation, assessment, evaluation, estimation, survey, judgment, valuation, appraisal, computation, calibration, mensuration, metage Measurement of blood pressure can be undertaken by the practice nurse.
Collins Thesaurus of the English Language – Complete and Unabridged 2nd Edition. 2002 © HarperCollins Publishers 1995, 2002


The act or process of ascertaining dimensions, quantity, or capacity:
The American Heritage® Roget's Thesaurus. Copyright © 2013, 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
قِياسمَقاييس الجِسِممَقاييس، حَجم، مساحَه
ölç meölçü


[ˈmeʒəmənt] N
1. (= size) → medida f
bust/hip measurementcontorno m de pecho/de caderas
inside leg measurementlargo m de entrepierna
waist measurementcintura f, talle m
to take sb's measurementstomar las medidas a algn
2. (= act, system) → medición f
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005


[waist, bust] → tour m
What is your waist measurement? → Quel est votre tour de taille?
chest measurement → tour m de poitrine
hip measurement → tour m de hanches
[level, pressure] → mesure f measurements
(for clothes)mesures fpl
to take sb's measurements → prendre les mesures de qn
to take measurements [scientist] → procéder à des mesures; [craftsman] → prendre les mesuresmeasuring jug npot m graduémeasuring tape ncentimètre m
Collins English/French Electronic Resource. © HarperCollins Publishers 2005


(= act)Messung f; the metric system of measurementdas metrische Maßsystem
(= measure)Maß nt; (= figure)Messwert m; (fig)Maßstab m; to take somebody’s measurementsan jdm or bei jdm Maß nehmen
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007


[ˈmɛʒəmənt] n (act) → misurazione f; (measure) → misura
to take sb's measurements → prendere le misure di or a qn
chest/hip measurement → giro petto/fianchi
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995


(ˈmeʒə) noun
1. an instrument for finding the size, amount etc of something. a glass measure for liquids; a tape-measure.
2. a unit. The metre is a measure of length.
3. a system of measuring. dry/liquid/square measure.
4. a plan of action or something done. We must take (= use, or put into action) certain measures to stop the increase in crime.
5. a certain amount. a measure of sympathy.
6. (in music) the musical notes contained between two bar lines.
1. to find the size, amount etc of (something). He measured the table.
2. to show the size, amount etc of. A thermometer measures temperature.
3. (with against, ~besides etc) to judge in comparison with. She measured her skill in cooking against her friend's.
4. to be a certain size. This table measures two metres by one metre.
ˈmeasurement noun
1. size, amount etc found by measuring. What are the measurements of this room?
2. the sizes of various parts of the body, usually the distance round the chest, waist and hips. What are your measurements, madam?
3. the act of measuring. We can find the size of something by means of measurement.
beyond measure
very great. I'm offering you riches beyond measure!
for good measure
as something extra or above the minimum necessary. The shopkeeper weighed out the sweets and put in a few more for good measure.
full measure
(no less than) the correct amount. We must ensure that customers get full measure.
made to measure (of clothing) made to fit the measurements of a particular person: Was your jacket made to measure?; adjective (etc)
a made-to-measure suit.
measure out
to mark (off), weigh (out) a certain distance, amount. He measured out a kilo of sugar.
measure up (often with to)
to reach a certain required standard. John's performance doesn't measure up (to the others).
Kernerman English Multilingual Dictionary © 2006-2013 K Dictionaries Ltd.


n (act) medición f, (value obtained) valor m, medida; Blood glucose measurement is easy..La medición de la glucosa en sangre es fácil.
English-Spanish/Spanish-English Medical Dictionary Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
References in classic literature ?
In respect of military method, we have, firstly, Measurement; secondly, Estimation of quantity; thirdly, Calculation; fourthly, Balancing of chances; fifthly, Victory.
a sulk and pout, by carpenter's measurement, about twenty feet long and five feet deep; a sulk and pout that will yield you some 500 gallons of oil and more.
Dimension implies direction, implies measurement, implies the more and the less.
[1]On Barsoom the AD is the basis of linear measurement. It is the equivalent of an Earthly foot, measuring about 11.694 Earth inches.
"Five paces by four and a half, five paces by four and a half, five paces by four and a half." The prisoner walked to and fro in his cell, counting its measurement, and the roar of the city arose like muffled drums with a wild swell of voices added to them.
Here I was, a giant among pig- mies, a man among children, a master intelligence among intellectual moles: by all rational measurement the one and only actually great man in that whole British world; and yet there and then, just as in the remote England of my birth-time, the sheep-witted earl who could claim long descent from a king's leman, acquired at second-hand from the slums of London, was a better man than I was.
I will translate that child-murder word for word, to give the reader a realizing sense of what a fifth part of the reading-matter of a Munich daily actually is when it comes under measurement of the eye:
Thompson, surveyor to the Northwest Company; who, by the joint means of the barometer and trigonometric measurement, ascertained it to be twenty-five thousand feet above the level of the sea; an elevation only inferior to that of the Himalayas.
Tahoe is one thousand five hundred and twenty-five feet deep in the centre, by the state geologist's measurement. They say the great peak opposite this town is five thousand feet high: but I feel sure that three thousand feet of that statement is a good honest lie.
He began to get accurate measurement of his strength and his weakness, and to know when to be bold and when to be cautious.
At the close of the eighteenth century Herschel, armed with a powerful telescope, considerably reduced the preceding measurements. He assigned a height of 11,400 feet to the maximum elevations, and reduced the mean of the different altitudes to little more than 2,400 feet.
The account he had given of himself stated that he was a surveyor, engaged in taking measurements for a new map of that part of the country, shortly to be published.

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