NORMAL

a. n.

5 definitions — Webster’s Dictionary (1828)


1.
a.

According to an established norm, rule, or principle; conformed to a type, standard, or regular form; performing the proper functions; not abnormal; regular; natural; analogical. Deviations from the normal type. Hallam.

2.
a.

According to a square or rule; perpendicular; forming a right angle. Specifically: Of or pertaining to a normal.

3.
a.

Standard; original; exact; typical. Specifically:

4.
a.

Denoting certain hypothetical compounds, as acids from which the real acids are obtained by dehydration; thus, normal sulphuric acid and normal nitric acid are respectively S(OH)6, and N(OH)5.

5.
n.

A straight line or plane drawn from any point of a curve or surface so as to be perpendicular to the curve or surface at that point.


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