geoscience

Etymology tree
Pre-Greek der.
Proto-Hellenic *gayader.
Ancient Greek γαῖᾰ (gaîă)clip.
Ancient Greek γῆ (gê)
Ancient Greek -ο- (-o-)
Ancient Greek γεω- (geō-)der.
English geo-
Proto-Indo-European *sek-?
Proto-Indo-European *-éyti
Proto-Indo-European *skey-der.
Latin sciō
Latin sciēns
Latin -ia
Latin scientialbor.
Old French sciencebor.
Middle English science
English science
English geoscience
From geo- + science.