protero-


a combining form meaning “earlier,” “before,” “former,” used in the formation of compound words: proterotype.

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Also especially before a vowel, proter-.
Compare proto-.

Origin of protero-

<Greek, combining form representing próteros, comparative formed from pró;see pro-2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for protero-

protero-

combining form

anterior or former in time, place, order, etcproterozoic

Word Origin for protero-

from Greek proteros fore
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