Etymology
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geodesy (n.)

1560s, "the art of land surveying," from Modern Latin geodaesia, from Greek geodaisia "division of the earth;" ultimately from "earth" (see Gaia) + stem of daiein "to divide," from PIE *dai-, extended form of root *da- "to divide." In modern use it refers to mathematical calculations derived from measuring large portions of the earth's surface. In this sense, in reference to structures, from 1936.

updated on October 31, 2018

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