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. Lyell.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.

(Nor"ice) n. Nurse. [Obs.] Chaucer.

(No"rie) n. [Etymol. uncertain.] (Zoöl.) The cormorant. [Prov. Eng.]

(Nor"i*mon) n.; pl. Norimons A Japanese covered litter, carried by men. B. Taylor.

(No"rite) n. [F., fr. Norvège Norway .] (Min.) A granular crystalline rock consisting essentially of a triclinic feldspar (as labradorite) and hypersthene.

(No"ri*um) n. [NL.] (Chem.) A supposed metal alleged to have been discovered in zircon.

(Norm) n. [L. norma a rule. See Normal, a.]

1. A rule or authoritative standard; a model; a type.

2. (Biol.) A typical, structural unit; a type. Agassiz.

(Nor"ma) n. [L.]

1. A norm; a principle or rule; a model; a standard. J. S. Mill.

2. A mason's or a carpenter's square or rule.

3. A templet or gauge.

(Nor"mal) 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.

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 respectively S(OH)6, and N(OH)5. (c) (Organ. Chem.) 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-.

  By PanEris using Melati.

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