/ Dictionary / Index D dactylomegaly: Meaning and Definition of Find definitions for: dac•ty•lo•meg•a•ly Pronunciation: (dak"tu-lō-meg'u-lē), [key] — n. Med. abnormal enlargement of the fingers or toes. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: dactylomegaly (Thesaurus) dactylology dactyloscopy Related Content Daily Word Quiz: portent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language