Definitions for obsolesceˌɒb səˈlɛs
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Random House Webster's College Dictionary
ob•so•lesceˌɒb səˈlɛs(v.i.)-lesced, -lesc•ing.
to be or become obsolescent.
Origin of obsolesce:
1870–75
Princeton's WordNet
obsolesce(verb)
become obsolete, fall into disuse
"This word has not obsolesced, although it is rarely used"
Wiktionary
obsolesce(Verb)
To become obsolete
Webster Dictionary
Obsolesce(verb)
to become obsolescent
Citation
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"obsolesce." Definitions.net. STANDS4 LLC, 2013. Web. 26 May 2013. <http://www.definitions.net/definition/obsolesce>.

