| Normal: English to English |
| Normal (a.) 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. |
| Normal (a.) According to a square or rule; perpendicular; forming a right angle. Specifically: Of or pertaining to a normal. |
| Normal (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. |
| Normal (a.) Any perpendicular. |
| Normal (a.) Denoting a solution of such strength that every cubic centimeter contains the same number of milligrams of the element in question as the number of its molecular weight. |
| Normal (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. |
| Normal (a.) Denoting that series of hydrocarbons in which no carbon atom is united with more than two other carbon atoms; as, normal pentane, hexane, etc. Cf. Iso-. |
| Normal (a.) Standard; original; exact; typical. |