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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



... dividing itself into bands scattered into every direction, holding up and searching both black men and women, beating and shooting those who showed a disposition to resist. On the corner of Seventh and Nun Streets stands Gregory Normal Institute for colored youth, with Christ Church (Congregational) and the teachers' home, comprising the most beautiful group of buildings in the city. This is the property of the American Missionary Association. The morning devotions had just ended ...
— Hanover; Or The Persecution of the Lowly - A Story of the Wilmington Massacre. • David Bryant Fulton
... science defines in such cases "an image of memory which differs in intensity from the normal"—that is to say, a fixed idea so persistent and growing that to the thinker ...
— Library of the World's Best Mystery and Detective Stories • Edited by Julian Hawthorne
... immediately caused by thus forcing up a register; and not only are these affected by the strain put upon them, but the whole interior of the throat becomes blood-red, and looks irritated and inflamed. As soon as the change to the right register is made the vocal apparatus returns to its normal state. ...
— The Mechanism of the Human Voice • Emil Behnke
... farm in the summer season. At the age of sixteen he entered the Norwalk Seminary, pursuing his studies with vigor for a few years, when it became necessary for him to earn his own living. He taught several schools and was among the first in the State to inaugurate the normal school system to elevate the standard of teaching and ...
— Cleveland Past and Present - Its Representative Men, etc. • Maurice Joblin
... incorporating all principles in the shibboleth of that single name. You have thus sought the well-spring of a political system in the deepest stratum of popular ignorance. To rid popular ignorance of its normal revolutionary bias, the rural peasants are indoctrinated with the conservatism that comes from the fear which appertains to property. They have their roots of land or their shares in a national loan. Thus you ...
— The Parisians, Complete • Edward Bulwer-Lytton


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