deaccession

v. t. [ de- + accession. Ca. 1970. ] to sell (artwork); -- used of sales of art by museums. The word appears to have been coined as a euphemism to avoid the negative connotations of the word “sell”, particularly for works donated by benefactors. The practise is justified as a means of acquiring funds for purchase of more valuable artworks. [ WordNet 1.5 +PJC ]

n. [ L. accessio, fr. accedere: cf. F. accession. See Accede. ] 1. A coming to; the act of acceding and becoming joined; as, a king's accession to a confederacy. [ 1913 Webster ]

2. Increase by something added; that which is added; augmentation from without; as, an accession of wealth or territory. [ 1913 Webster ]

The only accession which the Roman empire received was the province of Britain. Gibbon. [ 1913 Webster ]

3. (Law) (a) A mode of acquiring property, by which the owner of a corporeal substance which receives an addition by growth, or by labor, has a right to the part or thing added, or the improvement (provided the thing is not changed into a different species). Thus, the owner of a cow becomes the owner of her calf. (b) The act by which one power becomes party to engagements already in force between other powers. Kent. [ 1913 Webster ]

4. The act of coming to or reaching a throne, an office, or dignity; as, the accession of the house of Stuart; -- applied especially to the epoch of a new dynasty. [ 1913 Webster ]

5. (Med.) The invasion, approach, or commencement of a disease; a fit or paroxysm. AS [ 1913 Webster ]

Syn. -- Increase; addition; augmentation; enlargement. [ 1913 Webster ]