Nor·mal
(nôr′məl) A town of central Illinois near Bloomington. It is the seat of Illinois State University, founded as a normal school in 1857.
nor·mal
(nôr′məl)adj.1. Conforming with, adhering to, or constituting a norm, standard, pattern, level, or type; typical: normal room temperature; one's normal weight; normal diplomatic relations.
2. Biology Functioning or occurring in a natural way; lacking observable abnormalities or deficiencies.
3. Chemistry a. Relating to or designating the normality of a solution.
b. Abbr. n Designating an aliphatic hydrocarbon having an acyclic unbranched chain of carbon atoms.
4. Mathematics a. Being at right angles; perpendicular.
b. Perpendicular to the direction of a tangent line to a curve or a tangent plane to a surface.
5. a. Relating to or characterized by average intelligence or development.
b. Free from mental illness; sane.
n.1. The usual, expected, or standard state, form, amount, or degree: Temperatures have been above normal for this time of year.
2. Mathematics A perpendicular, especially a perpendicular to a line tangent to a plane curve or to a plane tangent to a space curve.
[Middle English, from Late Latin
normālis, from Latin,
made according to the square, from
norma,
carpenter's square; see
gnō- in
Indo-European roots.]
nor′mal·ly adv.
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.
normal
(ˈnɔːməl) adj1. usual; regular; common; typical: the normal way of doing it; the normal level.
2. constituting a standard: if we take this as normal.
3. (Psychology)
psychol a. being within certain limits of intelligence, educational success or ability, etc
b. conforming to the conventions of one's group
4. (Biology) biology med (of laboratory animals) maintained in a natural state for purposes of comparison with animals treated with drugs, etc
5. (Chemistry) chem (of a solution) containing a number of grams equal to the equivalent weight of the solute in each litre of solvent. Symbol: N
6. (Chemistry) chem denoting a straight-chain hydrocarbon: a normal alkane. Prefix: n-, e.g. n-octane
n8. the usual, average, or typical state, degree, form, etc
9. anything that is normal
10. (Mathematics) geometry a line or plane perpendicular to another line or plane or to the tangent of a curved line or plane at the point of contact
[C16: from Latin normālis conforming to the carpenter's square, from norma norm]
normality, ˈnormalcy n
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
nor•mal
(ˈnɔr məl)
adj. 1. conforming to the standard or the common type; usual; regular; natural.
2. serving to fix a standard.
3. of natural occurrence.
4. approximately average in any psychological trait, as intelligence, personality, or emotional adjustment.
5. free from any mental disorder; sane.
6. free from disease or malformation.
7. a. being at right angles, as a line; perpendicular.
b. of the nature of or pertaining to a mathematical normal.
8. a. (of a solution) containing one equivalent weight of the constituent in question in one liter of solution.
b. pertaining to an aliphatic hydrocarbon having a straight unbranched carbon chain, each carbon atom of which is joined to no more than two other carbon atoms.
n. 9. the normal form or state; the average or mean.
10. the standard or common type.
11. a. a perpendicular line or plane, esp. one perpendicular to a tangent line of a curve, or a tangent plane of a surface, at the point of contact.
b. the portion of this perpendicular line included between its point of contact with the curve and the x-axis.
[1520–30; < Latin normālis, from norma]
nor•mal′i•ty, n.
nor′mal•ly, adv.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.