/ Dictionary / Index H Heraclidae*: Meaning and Definition of Find definitions for: Her•a•cli•dae Pronunciation: (her"u-klī'dē), [key] — n. a drama (429? b.c.) by Euripides. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Heraclid Heraclitean Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language