Geometrical curve. Same as Algebraic curve; — so called because their different points may be constructed by the operations of elementary geometry.Geometric lathe, an instrument for engraving bank notes, etc., with complicated patterns of interlacing lines; — called also cycloidal engine.Geometrical

(Ge`o*log"ic*al*ly), adv. In a geological manner.

(Ge*ol"o*gist) n. [Cf. F. Géologiste.] One versed in the science of geology.

(Ge*ol"o*gize) v. i. [imp. & p. p. Geologized ; p. pr. & vb. n. Geologizing ] To study geology or make geological investigations in the field; to discourse as a geologist.

During midsummer geologized a little in Shropshire.

(Ge*ol"o*gy) n.; pl. Geologies [Gr. ge`a, gh^, the earth + -logy: cf. F. géologie.]

1. The science which treats: (a) Of the structure and mineral constitution of the globe; structural geology. (b) Of its history as regards rocks, minerals, rivers, valleys, mountains, climates, life, etc.; historical geology. (c) Of the causes and methods by which its structure, features, changes, and conditions have been produced; dynamical geology. See Chart of The Geological Series.

2. A treatise on the science.

(Ge*om"a*lism) n. [Gr. ge`a, gh^, the earth + "omalismo`s a leveling.] (Biol.) The tendency of an organism to respond, during its growth, to the force of gravitation.

(Ge"o*man`cer) n. One who practices, or is versed in, geomancy.

(Ge"o*man`cy) n. [OE. geomance, geomancie, F. géomance, géomancie, LL. geomantia, fr. Gr. ge`a, gh^, the earth + mantei`a divination.] A kind of divination by means of figures or lines, formed by little dots or points, originally on the earth, and latterly on paper.

(Ge`o*man"tic Ge`o*man"tic*al) a. [Cf. F. géomantique.] Pertaining or belonging to geomancy.

(Ge*om"e*ter) n. [F. géomètre, L. geometres, geometra, fr. Gr. gewme`trhs, fr. ge`a, gh^, the earth + me`tron measure. See Meter measure.]

1. One skilled in geometry; a geometrician; a mathematician. I. Watts.

2. (Zoöl.) Any species of geometrid moth; a geometrid.

(Ge*om"e*tral) a. [Cf. F. géométral.] Pertaining to geometry. [Obs.]

(Ge`o*met"ric Ge`o*met"ric*al) a. [L. geometricus; Gr. : cf. F. géométrique.] Pertaining to, or according to the rules or principles of, geometry; determined by geometry; as, a geometrical solution of a problem.

Geometric is often used, as opposed to algebraic, to include processes or solutions in which the propositions or principles of geometry are made use of rather than those of algebra.

Geometrical is often used in a limited or strictly technical sense, as opposed to mechanical; thus, a construction or solution is geometrical which can be made by ruler and compasses, i. e., by means of right lines and circles. Every construction or solution which requires any other curve, or such motion of a line or circle as would generate any other curve, is not geometrical, but mechanical. By another distinction, a geometrical solution is one obtained by the rules of geometry, or processes of analysis, and hence is exact; while a mechanical solution is one obtained by trial, by actual measurements, with instruments, etc., and is only approximate and empirical.

  By PanEris using Melati.

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