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 (ŏb′sə-lēt′, ŏb′sə-lēt′)
1. No longer in use: an obsolete word.
2. Outmoded in design, style, or construction: an obsolete locomotive.
3. Biology Vestigial or rudimentary, especially in comparison with related or ancestral species, as the tailbone of an ape. Used of an organ or other part of an organism.
tr.v. ob·so·let·ed, ob·so·let·ing, ob·so·letes
To cause to become obsolete: "The textbook publishers use every trick known to the marketing mind to obsolete their products year after year, thus closing off the possibility of second-hand sales" (Thomas Frank).

[Latin obsolētus, past participle of obsolēscere, to fall into disuse; see obsolescent.]

ob′so·lete′ly adv.
ob′so·lete′ness n.
ob′so·let′ism n.
References in classic literature ?
The ear of wheat (in Latin spica, obsoletely speca, from spe, hope) should not be the only hope of the husbandman; its kernel or grain (granum from gerendo, bearing) is not all that it bears.
Banomar called on all parties to abide by the ceasefire agreement, saying that "creating tension and fighting in this delicate stage is obsoletely not in the interest of any one.
Legs: Cylindrical, unarmed, with or without hispid tubercles; metacoxae widely separated, space between them about one-half the distance of coxae; coxae placed near lateral margin of pleurae; tibiae obsoletely sulcate; tarsi with basal segment subequal to second and third segments taken together.