/ Dictionary / Index D dactylo-: Meaning and Definition of Find definitions for: dactylo- Pronunciation: [key] a combining form meaning “finger,” “toe,” used in the formation of compound words: dactylomegaly. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. dactylic dactylogram 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