whiten definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
transitive verb, intransitive verb
to make or become white or whiter
Origin: Middle English whitnen ; from Old Norse hvitna ; from hvitr, white
whiten definition by American Heritage Dictionary
tr. & intr.v. whit·ened, whit·en·ing, whit·ens
To make or become white or whiter, especially by bleaching.
- whitˈen·er noun