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WordReference Random House Learner's Dictionary of American English © 2016
nor•mal /ˈnɔrməl/USA pronunciation
adj. WordReference Random House Unabridged Dictionary of American English © 2016
- conforming to or agreeing with the standard or the common type;
natural:a normal height for his age.
nearly average in one's mental or emotional state; rational;
- the normal form or state:Things returned to normal after the war.
- conforming to the standard or the common type;
- serving to establish a standard.
- approximately average in any psychological trait, as intelligence, personality, or emotional adjustment.
- free from any mental disorder;
- free from any infection or other form of disease or malformation, or from experimental therapy or manipulation.
- being at right angles, as a line;
- of the nature of or pertaining to a mathematical normal.
- (of an orthogonal system of real functions) defined so that the integral of the square of the absolute value of any function is 1.
- (of a topological space) having the property that corresponding to every pair of disjoint closed sets are two disjoint open sets, each containing one of the closed sets.
- (of a subgroup) having the property that the same set of elements results when all the elements of the subgroup are operated on consistently on the left and consistently on the right by any element of the group;
- (of a solution) containing one equivalent weight of the constituent in question in one liter of solution.
- 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.
- of or pertaining to a neutral salt in which any replaceable hydroxyl groups or hydrogen atoms have been replaced by other groups or atoms, as sodium sulfate, Na2SO4.
- the average or mean:Production may fall below normal.
- the standard or type.
- 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.
- the portion of this perpendicular line included between its point of contact with the curve and the x-axis.
nor•mal′i•ty, nor′mal•ness, n.
- Latin normālis made according to a carpenter's square, equivalent. to norm(a) (see norm) + -ālis -al1
- Place Namesa city in central Illinois. 35,672.
Collins Concise English Dictionary © HarperCollins Publishers::
normal /ˈnɔːməl/ adj
- usual; regular; common; typical: the normal way of doing it, the normal level
- constituting a standard: if we take this as normal
- being within certain limits of intelligence, educational success or ability, etc
- conforming to the conventions of one's group
- (of laboratory animals) maintained in a natural state for purposes of comparison with animals treated with drugs, etc
- (of a solution) containing a number of grams equal to the equivalent weight of the solute in each litre of solvent
- denoting a straight-chain hydrocarbon: a normal alkane. Prefix: n-, e.g. n-octane
- another word for perpendicular
Etymology: 16th Century: from Latin normālis conforming to the carpenter's square, from norma normnormality /nɔːˈmælɪtɪ/, esp US ˈnormalcy n
- the usual, average, or typical state, degree, form, etc
- anything that is normal
- 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
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