geodesy

• geodæsy (archaic)

From French géodésie, from Medieval Latin geōdaesia, from Ancient Greek γεωδαισία (geōdaisía), from γῆ (gê, “earth”) + δαίω (daíō, “to divide”).

• (UK) IPA^(key): /dʒiːˈɒdɪsi/
• (US) IPA^(key): /d͡ʒiˈɑdəsi/

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geodesy (usually uncountable, plural geodesies)

1. (sciences, geography) The discipline which deals with the measurement and representation of Earth, its gravitational field and geodynamic phenomena (polar motion, Earth tides, and crustal motion) in three-dimensional, time-varying space

• geodesy on Wikipedia.Wikipedia

• God's eye