/ Dictionary / Index D diapophysis: Meaning and Definition of Find definitions for: di•a•poph•y•sis Pronunciation: (dī"u-pof'u-sis), [key] — pl. -ses the part of the transverse process of a thoracic vertebra that articulates with its corresponding rib. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. diapir diapositive Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language