ratio(redirected from inspiratory-expiratory ratio)
Also found in: Thesaurus, Medical, Legal, Financial, Encyclopedia, Wikipedia.
n. pl. ra·tios
1. Relation in degree or number between two similar things.
2. The relative value of silver and gold in a currency system that is bimetallic.
3. Mathematics A relationship between two quantities, normally expressed as the quotient of one divided by the other; for example, the ratio of 7 to 4 can be written 7:4 or 7/4. A ratio can often also be expressed as a decimal or percentage.
[Latin ratiō, calculation, from ratus, past participle of rērī, to reckon, consider; see ar- in the Appendix of Indo-European roots.]
n, pl -tios
1. a measure of the relative size of two classes expressible as a proportion: the ratio of boys to girls is 2 to 1.
2. (Mathematics) maths a quotient of two numbers or quantities. See also proportion6
[C17: from Latin: a reckoning, from rērī to think; see reason]
ra•tio(ˈreɪ ʃoʊ, -ʃiˌoʊ)
n., pl. -tios.
1. the relation between two similar magnitudes with respect to the number of times the first contains the second: the ratio of 5 to 2, written 5:2 or 5/2.
2. proportional relation; rate: the ratio between acceptances and rejections.
3. the relative value of gold and silver when both are used as a country's monetary standard.
[1630–40; < Latin ratiō reckoning, proportion]
A relationship between two quantities, normally expressed as the quotient of one divided by the other. For example, if a box contains six red marbles and four blue marbles, the ratio of red marbles to blue marbles is 6 to 4, also written 6:4. A ratio can also be expressed as a decimal or percentage.
ratio- From Latin, literally, "reckoning."
See also related terms for reckoning.
Switch to new thesaurus
|Noun||1.||ratio - the relative magnitudes of two quantities (usually expressed as a quotient)|
abundance - (chemistry) the ratio of the total mass of an element in the earth's crust to the total mass of the earth's crust; expressed as a percentage or in parts per million
abundance - (physics) the ratio of the number of atoms of a specific isotope of an element to the total number of isotopes present
aspect ratio - the ratio of the width to the height of a tv picture
average - (sports) the ratio of successful performances to opportunities
breadth index, cephalic index, cranial index - ratio (in percent) of the maximum breadth to the maximum length of a skull
efficiency - the ratio of the output to the input of any system
facial index - the ratio (in percent) of the maximum width to the maximum height of the face
f number, focal ratio, stop number, speed - the ratio of the focal length to the diameter of a (camera) lens system
relative frequency, frequency - the ratio of the number of observations in a statistical category to the total number of observations
haematocrit, hematocrit, packed cell volume - the ratio of the volume occupied by packed red blood cells to the volume of the whole blood as measured by a hematocrit
I.Q., intelligence quotient, IQ - a measure of a person's intelligence as indicated by an intelligence test; the ratio of a person's mental age to their chronological age (multiplied by 100)
load factor - (aeronautics) the ratio of an external load to the weight of the aircraft (measured in g)
loss ratio - the ratio of the annual claims paid by an insurance company to the premiums received
Mach number - the ratio of the speed of a moving body to the speed of sound
magnification - the ratio of the size of an image to the size of the object
mechanical advantage - the ratio of the force exerted by a machine to the force applied to it
fuel consumption rate, gas mileage, gasoline mileage, mileage - the ratio of the number of miles traveled to the number of gallons of gasoline burned
betting odds, odds - the ratio by which one better's wager is greater than that of another; "he offered odds of two to one"
magnitude, order of magnitude - a number assigned to the ratio of two quantities; two quantities are of the same order of magnitude if one is less than 10 times as large as the other; the number of magnitudes that the quantities differ is specified to within a power of 10
output-to-input ratio - the output power of a transducer divided by the input power
prevalence - (epidemiology) the ratio (for a given time period) of the number of occurrences of a disease or event to the number of units at risk in the population
productivity - (economics) the ratio of the quantity and quality of units produced to the labor per unit of time
proportionality - a ratio of two quantities that is constant
quotient - the ratio of two quantities to be divided
index of refraction, refractive index - the ratio of the velocity of light in a vacuum to that in a medium
relative humidity - the ratio of the amount of water in the air at a give temperature to the maximum amount it could hold at that temperature; expressed as a percentage
respiratory quotient - the ratio of the volume of carbon dioxide expired to the volume of oxygen consumed by an organism or cell in a given period of time
factor of safety, safety factor - the ratio of the breaking stress of a structure to the estimated maximum stress in ordinary use
S/N, signal/noise, signal/noise ratio, signal-to-noise, signal-to-noise ratio - the ratio of signal intensity to noise intensity
stoichiometry - (chemistry) the relation between the quantities of substances that take part in a reaction or form a compound (typically a ratio of whole integers)
time constant - the ratio of the inductance of a circuit in henries to its resistance in ohms
employee turnover, turnover, turnover rate - the ratio of the number of workers that had to be replaced in a given time period to the average number of workers
loading - the ratio of the gross weight of an airplane to some factor determining its lift
eccentricity - (geometry) a ratio describing the shape of a conic section; the ratio of the distance between the foci to the length of the major axis; "a circle is an ellipse with zero eccentricity"
|2.||ratio - the relation between things (or parts of things) with respect to their comparative quantity, magnitude, or degree; "an inordinate proportion of the book is given over to quotations"; "a dry martini has a large proportion of gin"|
ratio(ˈreiʃiəu) – plural ˈratios – noun
the amount or proportion of one thing compared to another. There is a ratio of two girls to one boy in this class. verhouding نِسْبَه пропорция proporção poměr das Verhältnis forhold αναλογίαproporción suhe نسبت suhde proportionיחס अनुपात omjer (arány)szám perbandingan hlutfall proporzione 比 비율 proporcija, santykis proporcija; attiecība nisbah verhoudingforholdstosunek نسبت proporção raport, proporţie пропорция pomer razmerje odnos förhållande, proportion อัตราส่วน oran, nisbet 比例，比率 коефіцієнт; співвідношення تناسب tỷ lệ 比例，比率
ratio→ نِسْبَة poměr forhold Verhältnis λόγος proporción suhde rapport omjer rapporto 比率 비율 verhouding forhold stosunek proporção соотношение förhållande อัตราส่วน oran tỷ lệ 比率
L. relación, proporción, razón, expresión de la cantidad de una sustancia en relación con otra.