/ Dictionary / Index H hyperdactylia: Meaning and Definition of Find definitions for: hy•per•dac•tyl•i•a Pronunciation: (hī"pur-dak-til'ē-u), [key] — n. the presence of extra fingers or toes. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hypercriticism hyperdulia Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language