/ Dictionary / Index H hexaemeron: Meaning and Definition of Find definitions for: hex•a•em•er•on Pronunciation: (hek"su-em'u-ron"), [key] — n. the six days of the Creation. a written account of them, esp. the Biblical account. Gen. 1. a treatise on them. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hexadecimal hexaethyl tetraphosphate Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language