Hypertext Webster Gateway: "Obsolescent"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Obsolescent \Ob`so*les"cent\, a. [L. obsolescens, -entis, p. pr.
of obsolescere, to wear out gradually, to fall into disuse;
ob (see {Ob-}) + solere to use, be wont.]
Going out of use; becoming obsolete; passing into desuetude.
From WordNet (r) 1.7 (wn)
obsolescent
adj : becoming obsolete
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