from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. No longer in use: an obsolete word.
- adj. Outmoded in design, style, or construction: an obsolete locomotive.
- adj. Biology Vestigial or imperfectly developed, especially in comparison with other individuals or related species; not clearly marked or seen; indistinct. Used of an organ or other part of an animal or plant.
- transitive v. To cause to become obsolete.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. no longer in use; gone into disuse; disused or neglected (often by preference for something newer, which replaces the subject).
- adj. Imperfectly developed; not very distinct.
from the GNU version of the Collaborative International Dictionary of English
- adj. No longer in use; gone into disuse; disused; neglected; ; -- applied chiefly to words, writings, or observances.
- adj. Not very distinct; obscure; rudimental; imperfectly developed; abortive.
- intransitive v. To become obsolete; to go out of use.
from The Century Dictionary and Cyclopedia
- Gone out of use; no longer in use: as, an obsolete word; an obsolete custom; an obsolete law. Abbreviated obsolete
- In descriptive zoöl., indistinct; not clearly or sharply marked; applied to colors, faded, dim: as, an obsolete purple; applied to ornaments or organs, very imperfectly developed, hardly perceptible: as, obsolete striæ, spines, ocelli.
- To become obsolete; pass out of use.
- To make obsolete; render disused.
- In botany, notingan organ which is rudimentary or scarcely apparent.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. no longer in use
Latin obsolētus, past participle of obsolēscere, to fall into disuse; see obsolescent.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin obsoletus ("worn out, gone out of use"), past participle of obsolescere ("to wear out, fall into disuse, grow old, decay"); see obsolesce. (Wiktionary)