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GEOID (from Gr. yij, the earth)

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Originally appearing in Volume V11, Page 638 of the 1911 Encyclopedia Britannica.
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GEOID (from Gr. yij, the See also:earth)  , an imaginary See also:surface employed by geodesists which has the See also:property that every See also:element of it is perpendicular to the plumb-See also:line where that line cuts it . Compared with the " See also:spheroid of reference " the surface of the See also:geoid is in See also:general depressed over the oceans and raised over the See also:great See also:land masses . (See See also:EARTH, FIGURE OF THE.) GEOK-TEPE, a former fortress of the Turkomans, in See also:Russian Transcaspia, in the See also:oasis of Akhal-tekke, on the Transcaspian railway, 28 m . N.W. of See also:Askabad . It consisted of a walled enclosure in See also:circuit, the See also:wall being 18 ft. high and 20 to 30 ft. thick . In See also:December r88o the See also:place was attacked by 6000 Russians under General Skobelev, and after a See also:siege of twenty-three days was carried by See also:storm, although the defenders numbered 25,000 . A See also:monument and a small museum com- memorate the event .

End of Article: GEOID (from Gr. yij, the earth)
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GEOGRAPHY (Gr. yil, earth, and ypiickty, to write)
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