a combining form meaning “god,” used in the formation of compound words: theocrat.
Also especially before a vowel, the-.

Origin of theo-

< Greek, combining form of theós Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for theo-


before a vowel the-

combining form

indicating God or godstheology

Word Origin for theo-

from Greek theos god
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012