adventive

comparative more adventive · superlative most adventive

1. Accidental.
2. archaicAdventitious.

   1 more example

   For Hvmane Knovvledge, Which Concernes the mind, it hath two parts, the one that enquireth of The Svbstance, Or Natvre Of The Sovle Or Mind; The other, that enquireth of the Facvlties Or Fvnctions Thereof: vnto the firſt of theſe, the conſiderations of the Originall of the ſoule, whether it be Natiue or aduentiue; and how farre it is exempted from Lawes of Matter; […]

   1605, Francis Bacon, “The Second Booke”, in The Twoo Bookes of Francis Bacon. Of the Proficience and Aduancement of Learning, Diuine and Humane, London: […] [Thomas Purfoot and Thomas Creede] for Henrie Tomes, […], →OCLC, folios 44, verso – 45, recto

3. biologyOf a plant: not native, but introduced by humans to a place and since naturalized.

plural adventives

1. A non-native plant that has become naturalized.

   Such interlopers are known as exotics, adventives, or aliens, all terms that may be considered synonymous with "nasty.

   1988 April 15, James Krohe Jr., “Where Has All the Flora Gone?”, in Chicago Reader