/ Dictionary / Index H heptanedioic acid: Meaning and Definition of Find definitions for: hep'tane•di•o'ic ac'id Pronunciation: (hep'tān-dī-ō'ik), [key] — Chem. Chem. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. heptane heptangular Related Content Daily Word Quiz: pundit Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language