deaccession /ˌdiːækˈsɛʃən/noun 1verb 1forms 3 noun1 •The disposal of objects in this way, or the disposed object itself. verb1 •To officially remove an object from a ledger of a museum, art gallery or library so that it may be sold or disposed.Perhaps he forgets that museums, too, have basements full of stored art, and not every piece is equally adored. The temptation must be great to “deaccession” some of it, and museums often do succumb. — 2000 formsdeaccessioned · deaccessioning · deaccessions