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(), a.[L. normalis, fr. norma rule, pattern, carpenter's square; prob. akin to noscere to know; cf. Gr. well known, gnomon, also, carpenter's square: cf. F. normal. See Known, and cf. Abnormal, Enormous.] 1. 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. (Geom.) According to a square or rule; perpendicular; forming a right angle. Specifically: Of or pertaining to a normal. 3. (Chem.) Standard; original; exact; typical. Specifically: (a) (Quantitative Analysis) 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. (b) (Chem.) Denoting certain hypothetical compounds, as acids from which the real acids are obtained by dehydration; thus, normal sulphuric acid and normal nitric acid are r Nor"mal (), n.[Cf. F. normale, ligne normale. See Normal, a.] 1. (Geom.) Any perpendicular. 2. (Geom.) 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. The term normal is also used to denote the distance along the normal line from the curve to the axis of abscissas or to the center of curvature. スポンサード リンク
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