- becoming obsolete; passing out of use, as a word: an obsolescent term.
- becoming outdated or outmoded, as machinery or weapons.
- Biology. gradually disappearing or imperfectly developed, as vestigial organs.
Origin of obsolescent
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for obsolescent
And they are living reminders that one day even Rupert will be obsolescent.The Murdoch Family Succession Psychodrama
November 24, 2011
An obsolescent appliance for reminding assassins that they too are mortal.The Devil's Dictionary
A little but not very much of this is obsolete or obsolescent.Gryll Grange
Thomas Love Peacock
The obsolescent Atahocan seems to have had no moral activity.Myth, Ritual, and Religion, Vol. 1
This ceremony is never trifled with, though it is now obsolescent.Omaha sociology (1884 N 03 / 1881-1882 (pages 205-370))
James Owen Dorsey
The form with obsolescent ocelli has been named silvestris by Edwards.The Butterfly Book
William Jacob Holland
- becoming obsolete or out of date
C18: from Latin obsolescere; see obsolete
Word Origin and History for obsolescent
1755, from Latin obsolescentum (nominative obsolescens), present participle of obsolescere "fall into disuse" (see obsolete).
Online Etymology Dictionary, © 2010 Douglas Harper