follow Dictionary.com

It’s about time. We are now on Instagram!

adventitious

[ad-vuh n-tish-uh s] /ˌæd vənˈtɪʃ əs/
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
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
Related forms
adventitiously, adverb
adventitiousness, noun
nonadventitious, adjective
nonadventitiously, adverb
nonadventitiousness, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source
Examples from the web for adventitious
  • These climbing roots are adventitious; that is, they do not arise from the young root of the germinating seed.
  • The poem obtained adventitious fame.
  • Stilt roots are adventitious roots that grow out of the main trunk, a yard or so above the ground.
  • This would be sacrificing the essential to the adventitious with a vengeance.
  • These adventitious chats do not substitute for policies.
  • The rhetoric reflected the sudden, adventitious nature of the crisis.
British Dictionary definitions for adventitious

adventitious

/ˌædvɛnˈtɪʃəs/
adjective
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
Derived Forms
adventitiously, adverb
Word Origin
C17: from Latin adventīcius coming from outside, from adventus a coming
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
Word Origin and History for adventitious
adj.

"of the nature of an addition from without," c.1600, from Medieval Latin adventitius "coming from abroad, extraneous," a corruption of Latin adventicius "foreign, strange, accidental," from advent- past participle stem of advenire "arrive" (see advent). Related: Adventitiously; adventitiousness.

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
adventitious in Medicine

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
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source

Word of the Day

Difficulty index for adventitious

Few English speakers likely know this word

Word Value for adventitious

16
19
Scrabble Words With Friends

Quotes with adventitious