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Douglas Harper's Etymology Dictionary

word-forming element meaning "god, gods, God," from comb. form of Greek theos "god," from PIE root *dhes-, root of words applied to various religious concepts, such as Latin feriae "holidays," festus "festive," fanum "temple."


pre. (context: religion) god or deity

Usage examples of "theo-".

The Monkey, surprisingly, gravitated to Theo- He showed no sign of resentment at Theo's new rank.