1

a

**:**conforming to a type, standard, or regular pattern

**:**characterized by that which is considered usual, typical, or routine

normal working hours

under normal circumstances

It was just a normal, average day.

He had a normal childhood.

Their reaction to the news was normal and expected.

The noise made it impossible to carry on a normal conversation.

Challenges are a normal part of life; remind yourself of that—and keep going.—Gabrielle Gayagoy

b

**:**according with, constituting, or not deviating from a norm, rule, procedure, or principle

The normal spelling rule is "

*i*before*e*, except after*c*."They filed the paperwork in the normal way.

The plane was able to make a normal approach and landing.

… is your home office either your principal place of work or a place where you meet with customers or clients in the normal course of business?—Rosalind Resnick and Susie Archer

2

**:**occurring naturally

normal immunity

Cornell researchers showed that monarch butterflies that fed on leaves dusted with pollen from this [genetically] modified corn grew less and had higher mortality than larvae that fed on leaves dusted with normal pollen.—Russell Schoch

3

a

**:**approximating the statistical average or norm

The west coast had normal rainfall for the season.

normal scores for the tenth grade algebra exam

a country's normal death rate

Their insulin and blood sugar levels are within normal range.—Moises Velasquez-Manoff

b

**:**generally free from physical or mental impairment or dysfunction

**:**exhibiting or marked by healthy or sound functioning

normal reflexes

Fifteen normal subjects and 40 asthmatics of variable severity were studied.—J. Bousquet et al.

However, my experience is that there are many, many normal people with no psychiatric illness who have music playing in their head almost all the time or all the time.—Keith W. Roach

c

**:**not exhibiting defect or irregularity

normal and malignant cells

a normal heart

d

**:**within a range considered safe, healthy, or optimal

normal blood pressure

normal lab tests

4

a

of a solution

**:**having a concentration of one gram equivalent of solute per liter
c

**:**not associated

normal molecules

d

**:**having a straight-chain structure

normal butyl alcohol

5

**:**perpendicular

especially

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

**:**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 element

7

**:**relating to, involving, or being a normal curve or normal distribution

normal approximation to the binomial distribution

8

**:**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 matrix

1

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

**:**standard

2

**:**one that is normal

3

a

**:**a normal line

b

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

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Merriam-Webster unabridged
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