adventitious

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UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ˌædvɛnˈtɪʃəs/US:USA pronunciation: respellingUSA pronunciation: respelling(ad′vən tishəs)


WordReference Random House Unabridged Dictionary of American English © 2020
ad•ven•ti•tious  (ad′vən tishəs),USA pronunciation adj. 
  1. associated with something by chance rather than as an integral part;
    extrinsic.
  2. Botany, Zoologyappearing in an abnormal or unusual position or place, as a root.
ad′ven•titious•ly, adv. 
ad′ven•titious•ness, n. 
  • Latin adventīcius literally, coming from without, external, equivalent. to ad- ad- + ven- (stem of venīre to come) + -t(us) past participle suffix + -īcius -itious
  • 1595–1605

Collins Concise English Dictionary © HarperCollins Publishers::
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
Etymology: 17th Century: from Latin adventīcius coming from outside, from adventus a coming

ˌadvenˈtitiously adv
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