adventitiously

adventitious

[ad-vuhn-tish-uhs]
adjective
1.
associated with something by chance rather than as an integral part; extrinsic.
2.
Botany, Zoology. appearing in an abnormal or unusual position or place, as a root.

Origin:
1595–1605; < Latin adventīcius literally, coming from without, external, equivalent to ad- ad- + ven- (stem of venīre to come) + -t(us) past participle suffix + -īcius -itious

adventitiously, adverb
adventitiousness, noun
nonadventitious, adjective
nonadventitiously, adverb
nonadventitiousness, noun
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World English Dictionary
adventitious (ˌædvɛnˈtɪʃəs)
 
adj
1.  added or appearing accidentally or unexpectedly
2.  (of a plant or animal part) developing in an abnormal position, as a root that grows from a stem
 
[C17: from Latin adventīcius coming from outside, from adventus a coming]
 
adven'titiously
 
adv

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Etymonline
Word Origin & History

adventitious
"of the nature of an addition from without," c.1600, from M.L. adventitius "coming from abroad, extraneous," a corruption of L. adventicius "coming from abroad, extraneous, foreign," from adventum, pp. of advenire "arrive" (see advent).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

adventitious ad·ven·ti·tious (ād'věn-tĭsh'əs, -vən-)
adj.

  1. Arising from an external source or occurring in an unusual place or manner; extrinsic.

  2. Occurring accidentally or spontaneously, not caused by heredity.

  3. Adventitial.


ad'ven·ti'tious·ly adv.
The American Heritage® Stedman's Medical Dictionary
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