de (used in French names as an elided form of de): Charles Louis d'Albert.
di (used in Italian names as an elided form of di): Gabriele d'Annunzio.
Pronunciation Spelling. contraction of do or did before you: How d'you like your eggs cooked? D'you go to the movies last night?
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019