• WordNet 3.6
    • adj adventitious associated by chance and not an integral part "poetry is something to which words are the accidental, not by any means the essential form"- Frederick W. Robertson","they had to decide whether his misconduct was adventitious or the result of a flaw in his character"
    • ***
Webster's Revised Unabridged Dictionary
    • Adventitious (Bot) Accidentally or sparingly spontaneous in a country or district; not fully naturalized; adventive; -- applied to foreign plants.
    • Adventitious (Med) Acquired, as diseases; accidental.
    • Adventitious Added extrinsically; not essentially inherent; accidental or causal; additional; supervenient; foreign. "To things of great dimensions, if we annex an adventitious idea of terror, they become without comparison greater."
    • Adventitious (Nat. Hist) Out of the proper or usual place; as, adventitious buds or roots.
    • ***
Century Dictionary and Cyclopedia
    • adventitious 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.
    • adventitious 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.
    • adventitious In anatomy, of the nature of adventitia: as, the adventitious coat of an artery.
    • adventitious In phytogeography, naturalized from a distant formation: opposed to *vicine. A term proposed by Pound and Clements. Compare adventitious, 2.
    • ***
Chambers's Twentieth Century Dictionary
    • adj Adventitious ad-vent-ish′us accidental: additional: foreign: appearing casually
    • n Adventitious a thing or person coming from without
    • ***


  • Ralph Waldo Emerson
    “The adventitious beauty of poetry may be felt in the greater delight with a verse given in a happy quotation than in the poem.”


Webster's Revised Unabridged Dictionary
L. adventitius,


In literature:

Every Chinaman knows that the corns are adventitious eyes which give the mule this remarkable power.
"An Australian in China" by George Ernest Morrison
The course of events gave to the Henstead election an importance which seemed rather adventitious to people not Henstead-born.
"Quisanté" by Anthony Hope
Shylock was presented the next season for the sake of adventitious popularity that would thus accrue to the piece.
"Old-Time Makers of Medicine" by James J. Walsh
But to rest in symbols is fatal, since they are at best but the "adventitious wrappages" of life.
"Sartor Resartus, and On Heroes, Hero-Worship, and the Heroic in History" by Thomas Carlyle
But Owen has no adventitious attractions.
"The International Monthly Magazine, Volume 5, No. 1, January, 1852" by Various
In some trees you have a lot of adventitious buds that are still there and never forced out.
"Northern Nut Growers Association Report of the Proceedings at the Forty-Second Annual Meeting" by Northern Nut Growers Association
Their industries again, through the wise help of the State and other adventitious aids are capturing foreign markets.
"Sir Jagadis Chunder Bose" by Sir Jagadis Chunder Bose
They would develop adventitious buds very poorly.
"Northern Nut Growers Association Report of the Proceedings at the Second Annual Meeting" by Northern Nut Growers Association
At times however Lyly can dispense with such adventitious aids.
"John Lyly" by John Dover Wilson
Of fasting, poor girl, she had already too much for her bodily profit, without any adventitious use of it.
"For the Master's Sake" by Emily Sarah Holt

In poetry:

Ah, yes; why not? Is one more adventitious born
Than others--shekels richer, honors fuller, and all that--
That he can pass his fellows by with lofty scorn,
Nor even show this slight regard--the lifting of the hat?
"Be Courteous" by Hattie Howard

In science:

Palo Alto, CA) Instrument Devices, spectrometer. XPS data was typically collected within a few days of material preparation. Charge correction was based on adventitious carbon (C1s) at 284.6 eV. Except where noted, ion (Ar) sputtering was not employed prior to analysis.
A unique metal-semiconductor interface and resultant electron transfer phenomenon