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obsolescent: Meaning and Definition of
ob•so•les•cent
Pronunciation: (ob"su-les'unt), [key] ? adj.
- becoming obsolete; passing out of use, as a word: an obsolescent term.
- becoming outdated or outmoded, as machinery or weapons.
- gradually disappearing or imperfectly developed, as vestigial organs.
Random House Unabridged Dictionary, Copyright 1997, by Random House, Inc., on Infoplease.