from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Not inherent but added extrinsically. See Synonyms at accidental.
- adj. Biology Of or belonging to a structure that develops in an unusual place: adventitious roots.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. From an external source; not innate or inherent, foreign.
- adj. Accidental, additional, appearing casually.
- adj. Not congenital; acquired.
- adj. Developing in an unusual place or from an unusual source.
from the GNU version of the Collaborative International Dictionary of English
- adj. Added extrinsically; not essentially inherent; accidental or causal; additional; supervenient; foreign.
- adj. Out of the proper or usual place.
- adj. Accidentally or sparingly spontaneous in a country or district; not fully naturalized; adventive; -- applied to foreign plants.
- adj. Acquired, as diseases; accidental.
from The Century Dictionary and Cyclopedia
- Added extrinsically; not springing from the essence of the subject, but from another source; foreign; accidentally or casually acquired: applied to that which does not properly belong to a subject, but which is superadded or adopted, as in a picture or other work of art, to give it additional power or effect.
- In botany and zoology, appearing casually, or in an abnormal or unusual position or place; occurring as a straggler or away from its natural position or habitation; adventive.
- In anatomy, of the nature of adventitia: as, the adventitious coat of an artery.
- In phytogeography, naturalized from a distant formation: opposed to *vicine. A term proposed by Pound and Clements. Compare adventitious, 2.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. associated by chance and not an integral part
From Latin adventīcius, foreign, from adventus, arrival; see advent.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin adventicius ("foreign"), from adveniō ("arrive"). (Wiktionary)