a combining form meaning “early,” “primeval,” used in the formation of compound words: Eocene; eohippus.
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Words nearby eo-
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
British Dictionary definitions for eo-
early or primevalEocene; eohippus
Word Origin for eo-
from Greek, from ēōs dawn
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