To save this word, you'll need to log in.

## Definition of *normal*

(Entry 1 of 3)

1a

**:**conforming to a type, standard, or regular pattern normal working hours He had a normal childhood. the effect of normal agingb

**:**according with, constituting, or not deviating from a norm, rule, or principle The normal way to pluralize a noun is by adding*-s*.2

**:**occurring naturally normal immunity3a

**:**of, relating to, or characterized by average intelligence or development IQs within the normal rangeb

**:**free from mental illness**:**mentally sound symptoms of paranoia in otherwise normal personsc

**:**not associated normal moleculesd

**:**having a straight-chain structure normal butyl alcohol5

**:**perpendicular especially**:**perpendicular to a tangent (see tangent entry 1 sense 3) at a point of tangency6 of a subgroup

**:**having the property that every coset produced by operating on the left by a given element is equal to the coset produced by operating on the right by the same element7

**:**relating to, involving, or being a normal curve or normal distribution normal approximation to the binomial distribution8 of a matrix

**:**having the property of commutativity under multiplication by the transpose of the matrix (see matrix sense 5a) each of whose elements is a conjugate (see conjugate entry 1 sense 2b) complex number with respect to the corresponding element of the given matrixnormal

nounDefinition of *normal* (Entry 2 of 3)

1

**:**a form or state regarded as the norm**:**standard2

**:**one that is normal3a

**:**a normal lineb

**:**the portion of a normal line to a plane curve between the curve and the x-axisNormal

geographical nameDefinition of *Normal* (Entry 3 of 3)

town north of Bloomington in central Illinois

*population*52,497Keep scrolling for more

Keep scrolling for more

Keep scrolling for more

Keep scrolling for more

#### Test Your Vocabulary

Obscure Shapes

- Something that is
**ooid**is shaped like:

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ**Test Your Knowledge** - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Merriam-Webster unabridgedWords at Play

Ask the Editors

Share

normalTime Traveler for

normal## The first known use of

normalwas circa 1696See more words from the same year