Meaning of progressive assimilation

progres'sive assimila'tion

Pronunciation: [key]
— Phonet. Phonet.
  1. assimilation in which a preceding sound has an effect on a following one, as in shortening captain to cap'm rather than cap'n. Cf.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.