/ Dictionary / Index D diploë: Meaning and Definition of Find definitions for: dip•lo•ë Pronunciation: (dip'lō-ē"), [key] — n. Anat. the cancellate bony tissue between the hard inner and outer walls of the bones of the cranium. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. diplodocus diploid Related Content Daily Word Quiz: supine Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language