normal

[nawr-muh l] /ˈnɔr məl/

adjective

conforming to the standard or the common type; usual; not abnormal; regular; natural.

serving to establish a standard.

Psychology.

approximately average in any psychological trait, as intelligence, personality, or emotional adjustment.
free from any mental disorder; sane.

Biology, Medicine/Medical.

free from any infection or other form of disease or malformation, or from experimental therapy or manipulation.
of natural occurrence.

Mathematics.

being at right angles, as a line; perpendicular.
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; invariant.

Chemistry.

(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of or pertaining to a neutral salt in which any replaceable hydroxyl groups or hydrogen atoms have been replaced by other groups or atoms, as sodium sulfate, Na ₂ SO ₄ .

noun

the average or mean:

Production may fall below normal.

the standard or type.

Mathematics.

a perpendicular line or plane, especially 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.

Origin

1520-30; < Latin normālis made according to a carpenter's square, equivalent to norm(a) (see norm) + -ālis -al¹

Related forms

normality, normalness, noun

antinormal, adjective

antinormalness, noun

antinormality, noun

half-normal, adjective

half-normally, adverb

hypernormal, adjective

hypernormally, adverb

hypernormalness, noun

hypernormality, noun

nonnormal, adjective

nonnormally, adverb

nonnormalness, noun

nonnormality, noun, plural nonnormalities.

overnormal, adjective

overnormally, adverb

overnormality, noun

quasi-normal, adjective

quasi-normally, adverb

seminormal, adjective

seminormally, adverb

seminormalness, noun

seminormality, noun

transnormal, adjective

transnormally, adverb

unnormal, adjective

unnormally, adverb

unnormalness, noun

Normal

[nawr-muh l] /ˈnɔr məl/

noun

a city in central Illinois.

Examples from the web for normal

Weather is so variable that it's hard to call any situation normal.
Monsoons are normal, but the duration and intensity was bizarre.
It is normal for a cow to eat her young when she senses that they are sickly.
She's the most normal, unassuming woman.
It is indeed a normal reaction.
When it comes to the academic job market, there is no such thing as normal.
The result is a normal-height countertop that's easily supported by standard cabinets.
The article traces the history of bugs being quite a normal part of cuisines around the world.
It's normal to have that dusting of stuff on the sticky boards.
Under domestication monstrosities sometimes occur which resemble normal structures in widely different animals.

British Dictionary definitions for normal

normal

/ˈnɔːməl/

adjective

usual; regular; common; typical: the normal way of doing it, the normal level

constituting a standard: if we take this as normal

(psychol)

being within certain limits of intelligence, educational success or ability, etc
conforming to the conventions of one's group

(biology, med) (of laboratory animals) maintained in a natural state for purposes of comparison with animals treated with drugs, etc

(chem) (of a solution) containing a number of grams equal to the equivalent weight of the solute in each litre of solvent N

(chem) denoting a straight-chain hydrocarbon: a normal alkane. Prefix: n-, e.g. n-octane

(geometry) another word for perpendicular (sense 1)

noun

the usual, average, or typical state, degree, form, etc

anything that is normal

10.

(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

Derived Forms

normality (nɔːˈmælɪtɪ), especially (US) normalcy, noun

Word Origin

C16: from Latin normālis conforming to the carpenter's square, from normanorm

Word Origin and History for normal

adj.

c.1500, "typical, common;" 1640s, "standing at a right angle," from Late Latin normalis "in conformity with rule, normal," from Latin normalis "made according to a carpenter's square," from norma "rule, pattern," literally "carpenter's square" (see norm). Meaning "conforming to common standards, usual" is from 1828, but probably older than the record [Barnhart].

As a noun meaning "usual state or condition," from 1890. Sense of "normal person or thing" is from 1894. Normal school (1834) is from French école normale (1794), a republican foundation. The city of Normal, Illinois, U.S., was named 1857 for the normal school established there.

normal in Medicine

normal nor·mal (nôr'məl)
adj.

Conforming with, adhering to, or constituting a norm, standard, pattern, level, or type; typical.
Functioning or occurring in a natural way; lacking observable abnormalities or deficiencies.
Occurring naturally and not because of disease, inoculation, or any experimental treatment. Used of immunity.
Of, relating to, or being a solution having one gram equivalent weight of solute per liter of solution.
Of, relating to, or being an aliphatic hydrocarbon having a straight and unbranched chain of carbon atoms.
Of, relating to, or characterized by average intelligence or development.

n.
The usual or the expected state, form, amount, or degree.