Normal Nor"mal (n[^o]r"mal), n. [Cf. F. normale, ligne normale. See {Normal}, a.] 1. (Geom.) Any perpendicular. [1913 Webster]

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. [1913 Webster]

Note: 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. [1913 Webster]

The Collaborative International Dictionary of English. 2000.


Look at other dictionaries:

  • normal —  normal …   Hochdeutsch - Plautdietsch Wörterbuch

  • normal — normal, ale, aux [ nɔrmal, o ] adj. et n. f. • 1753; verbe normal h. XVe; lat. normalis, de norma « équerre » 1 ♦ Math. Droite normale, ou n. f. la normale à une courbe, à une surface en un point : droite perpendiculaire à la tangente, au plan… …   Encyclopédie Universelle

  • Normal — Nor mal (n[^o]r mal), a. [L. normalis, fr. norma rule, pattern, carpenter s square; prob. akin to noscere to know; cf. Gr. gnw rimos well known, gnw mwn gnomon, also, carpenter s square: cf. F. normal. See {Known}, and cf. {Abnormal},… …   The Collaborative International Dictionary of English

  • normal — NORMÁL, Ă, normali, e, adj. 1. (Adesea adverbial) Care este aşa cum trebuie să fie, potrivit cu starea firească, obişnuit, firesc, natural. ♢ Plan normal = plan perpendicular pe tangenta dusă într un punct al unei curbe. Linie normală (şi… …   Dicționar Român

  • Normal — may refer to: Normality (behavior), conformance to an average Norm (sociology), social norms, expected patterns of behavior studied within the context of sociology Normal distribution (mathematics), the Gaussian continuous probability… …   Wikipedia

  • normal — normal, ale (nor mal, ma l ) adj. 1°   Terme de géométrie. Ligne normale, ou, substantivement, une normale, droite passant par le point de tangence et perpendiculaire, soit à la tangente d une courbe, soit au plan tangent d une surface. 2°   Fig …   Dictionnaire de la Langue Française d'Émile Littré

  • normal — (adj.) c.1500, typical, common; 1640s, standing at a right angle, from L.L. normalis in conformity with rule, normal, from L. normalis made according to a carpenter s square, from norma rule, pattern, lit. carpenter s square (see NORM (Cf. norm)) …   Etymology dictionary

  • normal — (Del lat. normālis). 1. adj. Dicho de una cosa: Que se halla en su estado natural. 2. Que sirve de norma o regla. 3. Dicho de una cosa: Que, por su naturaleza, forma o magnitud, se ajusta a ciertas normas fijadas de antemano. 4. Geom. Dicho de… …   Diccionario de la lengua española

  • normal — [nôr′məl] adj. [L normalis < norma, a rule: see NORM] 1. conforming with or constituting an accepted standard, model, or pattern; esp., corresponding to the median or average of a large group in type, appearance, achievement, function,… …   English World dictionary

  • normal — I (regular) adjective according to rule, average, common, commonplace, conforming, conventional, customary, established, everyday, habitual, natural, orderly, ordinary, representative, routine, standard, standardized, true to form, typical,… …   Law dictionary

  • normal — UK US /ˈnɔːməl/ adjective ► usual, and what you would expect: »They were selling the good at half the normal price. »In normal circumstances, you should be able to decide this sort of thing without consulting your manager. »It is normal practice… …   Financial and business terms

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