a combining form meaning “six,” used in the formation of compound words: hexapartite.

Also especially before a vowel, hex-.

Origin of hexa-

combining form representing Greek héx six
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for hexa-


before a vowel hex-

combining form

sixhexachord; hexameter

Word Origin for hexa-

from Greek, from hex six
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 hexa-

before vowels, hex-, word-forming element meaning "six," from Greek hexa-, comb. form of hex "six" (see six).

Online Etymology Dictionary, © 2010 Douglas Harper

hexa- in Medicine



Containing six atoms, molecules, or groups:hexose.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.