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-geny origin; production; generation.
geo- earth.
geocentric of, concerning, or measured from the center of the earth. [2 definitions]
geochronology the order of events in the earth's history as revealed by geological studies.
geode a hollow, usu. globular stone, the cavity of which is lined with crystals.
geodesic of or concerning the study or properties of lines and other geometric constructions defined on curved surfaces. [3 definitions]
geodesy the science concerned with measuring the size, shape, area, and curvature of the entire earth or of large parts of it and with locating specific geographical points.
geodetic of, pertaining to, or determined by geodesy. [2 definitions]
Geoffrey Chaucer an English poet (b.1340?--d.1400).
geographer one who studies, researches, or maps the earth's surface as a profession.
geographical of or concerning geography. [2 definitions]
geography the science of the earth's surface, including its physical features, climate, resident populations, political divisions, agriculture, natural resources, and the like. [2 definitions]
geologic of, pertaining to, or according to geology.
geology the study of the physical structure, composition and development of the earth or other solid astronomical bodies, esp. with regard to rocks. [2 definitions]
geomagnetism the earth's magnetic properties. [2 definitions]
geometric of or concerning geometry. [2 definitions]
geometric progression a sequence of terms, such as 1, 4, 16, 64, 256, in which the ratio of each term to its predecessor is always the same.
geometrid of, pertaining to, or belonging to a family of broad-winged moths, the larvae of which are called measuring worms. [2 definitions]
geometry the mathematical study of planar or spatial objects such as points, lines, planes, and solid figures. [3 definitions]
geomorphology the study of the origin, development, and configuration of topographic forms.
geophagy the practice of eating earthy matter such as clay or chalk, as during a famine or as a symptom of mental illness.