/ Dictionary / Index H hapteron: Meaning and Definition of Find definitions for: hap•ter•on Pronunciation: (hap'tu-ron"), [key] — pl. -ter•a a structure by which a fungus, aquatic plant, or algae colony attaches to an object; a holdfast. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hapten haptics Related Content Daily Word Quiz: nonchalant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language