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Definition of: adventitious
(ad′ven·tish′əs) adjective
1. Not inherent; extrinsic; accidental; casual.
2. Accidental; acquired, not inherited.
3. Biol. a Occurring in an unusual location: an adventitious root, b Adventitial. c Adventive. [<L adventicius coming from abroad, foreign.
See ADVENT]
—ad′ven·ti′tious·ly adverb
—ad′ven·ti′tious·ness noun
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