Webster's Dictionary, 1913

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Geocronite noun [ Greek ge`a , gh^ , the earth + Kro`nos Saturn, the alchemistic name of lead: confer German geokronit .] (Min.) A lead-gray or grayish blue mineral with a metallic luster, consisting of sulphur, antimony, and lead, with a small proportion of arsenic.

Geocyclic adjective [ Greek ge`a , gh^ , the earth + ky`klos circle.]
1. Of, pertaining to, or illustrating, the revolutions of the earth; as, a geocyclic machine.

2. Circling the earth periodically.

Geode (jē"ōd) noun [ French géode , Latin geodes , from Greek ... earthlike; ge`a , gh^ , the earth + e'i^dos form.] (Min.) (a) A nodule of stone, containing a cavity, lined with crystals or mineral matter. (b) The cavity in such a nodule.

Geodephagous (jē`o*dĕf"ȧ*gŭs) adjective [ Greek ge`a , gh^ , earth + 'adhfa`gos eating one's fill; gluttonous.] (Zoology) Living in the earth; -- applied to the ground beetles.

Geodesic (jē`o*dĕs"ĭk), Ge`o*des"ic*al (-ĭ*k a l) adjective [ Confer French géodésique .] (Math.) Of or pertaining to geodesy; geodetic.

Geodesic noun A geodetic line or curve.

Geodesist noun One versed in geodesy.

Geodesy noun [ Greek ...; ge`a , gh^ , the earth + ... to divide: confer French géodésie .] (Math.) That branch of applied mathematics which determines, by means of observations and measurements, the figures and areas of large portions of the earth's surface, or the general figure and dimenshions of the earth; or that branch of surveying in which the curvature of the earth is taken into account, as in the surveys of States, or of long lines of coast.

Geodetic, Geodetical adjective Of or pertaining to geodesy; obtained or determined by the operations of geodesy; engaged in geodesy; geodesic; as, geodetic surveying; geodetic observers.

Geodetic line or curve , the shortest line that can be drawn between two points on the elipsoidal surface of the earth; a curve drawn on any given surface so that the osculating plane of the curve at every point shall contain the normal to the surface; the minimum line that can be drawn on any surface between any two points.

Geodetically adverb In a geodetic manner; according to geodesy.

Geodetics noun Same as Geodesy .

Geodiferous adjective [ Geode + -ferous .] (Min.) Producing geodes; containing geodes.

Geoduck noun [ American Indian name.] (Zoology) A gigantic clam ( Glycimeris generosa ) of the Pacific coast of North America, highly valued as an article of food.

Geognosis noun [ See Geognosy .] Knowledge of the earth. [ R.] G. Eliot.

Geognost noun [ Confer French géognoste .] One versed in geognosy; a geologist. [ R.]

Geognostic, Geognostical adjective [ Confer French géognostique .] Of or pertaining to geognosy, or to a knowledge of the structure of the earth; geological. [ R.]

Geognosy noun [ Greek ge`a , gh^ , the earth + gnw^sis knowing, knowledge, from gignw`skein to know: confer French géognosie .] That part of geology which treats of the materials of the earth's structure, and its general exterior and interior constitution.

Geogonic, Geogonical adjective [ Confer French géogonique .] Of or pertaining to geogony, or to the formation of the earth.

Geogony noun [ Greek ge`a , gh^ , the earth + ... generation, birth, from the root of ... to be born: confer French géogonie .] The branch of science which treats of the formation of the earth.

Geographer noun One versed in geography.

Geographic, Geographical adjective [ Latin geographicus , Greek ...: confer French géographique .] Of or pertaining to geography.

Geographical distribution . See under Distribution . -- Geographic latitude (of a place), the angle included between a line perpendicular or normal to the level surface of water at rest at the place, and the plane of the equator; differing slightly from the geocentric latitude by reason of the difference between the earth's figure and a true sphere. -- Geographical mile . See under Mile . -- Geographical variation , any variation of a species which is dependent on climate or other geographical conditions.

Geographically adverb In a geographical manner or method; according to geography.

Geography noun ; plural Geographies . [ French géographie , l. geographia , from Greek ...; ge`a , gh^ , the earth + ... description, from ... to write, describe. See Graphic .]
1. The science which treats of the world and its inhabitants; a description of the earth, or a portion of the earth, including its structure, features, products, political divisions, and the people by whom it is inhabited.

2. A treatise on this science.

Astronomical , or Mathematical , geography treats of the earth as a planet, of its shape, its size, its lines of latitude and longitude, its zones, and the phenomena due to to the earth's diurnal and annual motions. -- Physical geography treats of the conformation of the earth's surface, of the distribution of land and water, of minerals, plants, animals, etc., and applies the principles of physics to the explanation of the diversities of climate, productions, etc. -- Political geography treats of the different countries into which earth is divided with regard to political and social and institutions and conditions.

Geolatry noun [ Greek ge`a , gh^ , the earth + ... worship.] The worship of the earth. G. W. Cox.

The Geological Series . » The science of geology, as treating of the history of the globe, involves a description of the different strata which compose its crust, their order of succession, characteristic forms of animal and vegetable life, etc. The principal subdivisions of geological time, and the most important strata, with their relative positions, are indicated in the following diagram.

Geologer, Geologian noun A geologist.

Geologic, Geological adjective [ Confer French géologique .] Of or pertaining to geology, or the science of the earth.

Geologically adverb In a geological manner.

Geologist noun [ Confer French Géologiste .] One versed in the science of geology.

Geologize intransitive verb [ imperfect & past participle Geologized ; present participle & verbal noun Geologizing .] To study geology or make geological investigations in the field; to discourse as a geologist.

During midsummer geologized a little in Shropshire.

Geology noun ; plural Geologies . [ Greek ge`a , gh^ , the earth + -logy : confer French 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.

Geomalism noun [ Greek 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.

Geomancer noun One who practices, or is versed in, geomancy.

Geomancy noun [ Middle English geomance , geomancie , French géomance , géomancie , Late Latin geomantia , from Greek 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.

Geomantic, Geomantical adjective [ Confer French géomantique .] Pertaining or belonging to geomancy.

Geometer noun [ French géomètre , Latin geometres , geometra , from Greek gewme`trhs , from ge`a , gh^ , the earth + me`tron measure. See Meter measure.]
1. One skilled in geometry; a geometrician; a mathematician. I. Watts.

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

Geometral adjective [ Confer French géométral .] Pertaining to geometry. [ Obsolete]

Geometric, Geometrical adjective [ Latin geometricus ; Greek ...: confer French 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.

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 pace , a measure of five feet. -- Geometric pen , an instrument for drawing geometric curves, in which the movements of a pen or pencil attached to a revolving arm of adjustable length may be indefinitely varied by changing the toothed wheels which give motion to the arm. -- Geometrical plane (Persp.) , the same as Ground plane . -- Geometrical progression , proportion , ratio . See under Progression , Proportion and Ratio . -- Geometrical radius , in gearing, the radius of the pitch circle of a cogwheel. Knight. -- Geometric spider (Zoology) , one of many species of spiders, which spin a geometrical web. They mostly belong to Epeira and allied genera, as the garden spider. See Garden spider . -- Geometric square , a portable instrument in the form of a square frame for ascertaining distances and heights by measuring angles. -- Geometrical staircase , one in which the stairs are supported by the wall at one end only. -- Geometrical tracery , in architecture and decoration, tracery arranged in geometrical figures.

Geometrically adverb According to the rules or laws of geometry.

Geometrician noun One skilled in geometry; a geometer; a mathematician.

Geometrid adjective (Zoology) Pertaining or belonging to the Geometridæ .

Geometrid noun (Zoology) One of numerous genera and species of moths, of the family Geometridæ ; -- so called because their larvæ (called loopers , measuring worms , spanworms , and inchworms ) creep in a looping manner, as if measuring. Many of the species are injurious to agriculture, as the cankerworms.

Geometrize intransitive verb [ imperfect & past participle Geometrized ; present participle & verbal noun Geometrizing .] To investigate or apprehend geometrical quantities or laws; to make geometrical constructions; to proceed in accordance with the principles of geometry.

Nature geometrizeth , and observeth order in all things.
Sir T. Browne.

Geometry noun ; plural Geometries [ French géométrie , Latin geometria , from Greek ..., from ... to measure land; ge`a , gh^ , the earth + ... to measure. So called because one of its earliest and most important applications was to the measurement of the earth's surface. See Geometer .]
1. That branch of mathematics which investigates the relations, properties, and measurement of solids, surfaces, lines, and angles; the science which treats of the properties and relations of magnitudes; the science of the relations of space.

2. A treatise on this science.

Analytical, or Coördinate , geometry , that branch of mathematical analysis which has for its object the analytical investigation of the relations and properties of geometrical magnitudes. -- Descriptive geometry , that part of geometry which treats of the graphic solution of all problems involving three dimensions. -- Elementary geometry , that part of geometry which treats of the simple properties of straight lines, circles, plane surface, solids bounded by plane surfaces, the sphere, the cylinder, and the right cone. -- Higher geometry , that pert of geometry which treats of those properties of straight lines, circles, etc., which are less simple in their relations, and of curves and surfaces of the second and higher degrees.

Geophagism noun [ Greek ge`a , gh^ , earth + ... to eat.] The act or habit of eating earth. See Dirt eating , under Dirt . Dunglison.

Geophagist noun One who eats earth, as dirt, clay, chalk, etc.

Geophagous adjective Earth- eating.

Geophila noun plural [ New Latin , from Greek ge`a , gh^ , earth + ... to love.] (Zoology) The division of Mollusca which includes the land snails and slugs.

Geoponic, Geoponical adjective [ Greek ...; ge`a , gh^ , earth + ... toilsome, from ... labor: confer French géoponique .] Pertaining to tillage of the earth, or agriculture.

Geoponics noun [ Greek ...: confer French géoponique .] The art or science of cultivating the earth; agriculture. Evelin.

Georama noun [ Greek ge`a , gh^ , the earth + ... sight, view, ... to see, view: confer French géorama .] A hollow globe on the inner surface of which a map of the world is depicted, to be examined by one standing inside.