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Normal   /nˈɔrməl/   Listen
adjective
Normal  adj.  
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."
2.
(Geom.) According to a square or rule; perpendicular; forming a right angle; as, a line normal to the base. 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 respectively S(OH)6, and N(OH)5.
(c)
(Organ. Chem.) Denoting that series of hydrocarbons in which no carbon atom is bound to more than two other carbon atoms; as, normal pentane, hexane, etc. Cf. Iso-.
Normal equations (Method of Least Squares), a set of equations of the first degree equal in number to the number of unknown quantities, and derived from the observations by a specified process. The solution of the normal equations gives the most probable values of the unknown quantities.
Normal group (Geol.), a group of rocks taken as a standard.
Normal place (of a planet or comet) (Astron.), the apparent place in the heavens of a planet or comet at a specified time, the place having been determined by a considerable number of observations, extending perhaps over many days, and so combined that the accidental errors of observation have largely balanced each other.
Normal school, a school whose methods of instruction are to serve as a model for imitation; an institution for the training of teachers.
Synonyms: Normal, Regular, Ordinary. Regular and ordinary are popular terms of well-known signification; normal has now a more specific sense, arising out of its use in science. A thing is normal, or in its normal state, when strictly conformed to those principles of its constitution which mark its species or to the standard of a healthy and natural condition. It is abnormal when it departs from those principles.


noun
Normal  n.  
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. 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.





Collaborative International Dictionary of English 0.48


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"Normal" Quotes from Famous Books



... the evil was reproduced more rapidly than good. Only error seemed to have vitality. The false lights which sin had kindled shed only a delusive gleam. The soul occasionally asserted the dignity which God had given it, and great men swept and garnished houses, but devils reentered, and the normal condition of humanity was what the Bible declares it to be since Adam was expelled from Paradise. Genius, energy, ambition, were allowed to win their victories, and they shed a glorious light, and for a time exalted the reason ...
— The Old Roman World • John Lord
... Slave Merchant,"— Tajurrah,—and on the left two similar patches of seagirt sand, called Aybat and Saad el Din. These places supply Zayla, in the Kharif or hot season [20], with thousands of gulls' eggs,—a great luxury. At noon we sighted our destination. Zayla is the normal African port,—a strip of sulphur-yellow sand, with a deep blue dome above, and a foreground of the darkest indigo. The buildings, raised by refraction, rose high, and apparently from the bosom of the deep. After hearing the worst accounts of it, ...
— First footsteps in East Africa • Richard F. Burton
... after the catastrophe, Cissie made an excursion to the Siner cabin with a plate of cookies. Cissie was careful to place her visit on exactly a normal footing. She brought her little cakes in the role of one who saw no evil, spoke no evil, and heard no evil. But somehow Cissie's visit increased the old woman's wrath. She remained obstinately in the kitchen, and made remarks not only audible, but arresting, through ...
— Birthright - A Novel • T.S. Stribling
... the operator sullenly. "It was worse than ever about five minutes ago. It's much better now, almost normal again." ...
— The Silent Bullet • Arthur B. Reeve
... the mass, there seems no possible escape; at first I was surprised that a colored man should be treated as he is in this town; but a little reflection showed that, after all, it was but recognizing his claims to humanity and normal equality; so that, in some things, we Americans leave to other countries the carrying out of the principle that stands at the head of our Declaration ...
— Redburn. His First Voyage • Herman Melville


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