a combining form meaning “five,” used in the formation of compound words: quinquevalent.
Origin of quinque-
< Latin, combining form of quīnque; see five
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British Dictionary definitions for quinque-
Word Origin for quinque-
from Latin quinque
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
Word Origin and History for quinque-
before vowels quinqu-, word-forming element meaning "five, having five," from Latin quinque "five," by assimilation from PIE *penkwe (see five).
Online Etymology Dictionary, © 2010 Douglas Harper