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Definition of: geodesy
(jē·od′ə·sē) noun Math.
The study and measurement of extensive areas of the earth's surface, especially with reference to the determination of the magnitude and figure of the earth: distinguished from surveying (of limited areas). [<F géodésie <NL geodaesia <Gk. geodaisia <gē earth + daiein divide]
—ge·od′e·sist noun
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