| 释义 |
adˈventive, a. and n.
[f. L. advent- (ppl. stem of advenī-re, see advene) + -ive, as if ad. L. *adventīvus. Cf. preventive, inventive.]
A. adj.
1. Used by Bacon for adventitious. Obs.
1605Bacon Adv. Learn. ii. xi. §1 The considerations of the original of the soul, whether it be natiue or adventiue. 1626― Sylva §456 (1651) The Cause may be, for that Adventiue Heat doth chear up the Natiue Juyce of the Tree.
2. Bot. Of a plant: growing spontaneously but not native to the locality in which it appears; imperfectly naturalized.
1867Gray Man. Bot. (ed. 5) 16, I have classified our introduced plants..into two sorts, the thoroughly naturalized, and the adventive;..the second, those which are only locally spontaneous. 1888F. A. Lees Flora of W. Yorks. 313 It is luxuriant as to size and adventive. 1919I. Hayward & G. C. Druce (title) The adventive flora of Tweedside. 1936Nature 11 Apr. 600/2 A survey of the weed flora of the northern part of the United States shows that a large proportion of the adventive weeds are from Europe.
B. n.
1. An immigrant, a sojourner. Obs.
a1626Bacon Adv. Villiers (T.) That the natives be not so many, but that there may be elbow-room enough for them, and for the adventives also.
2. An adventive plant.
1888F. A. Lees Flora of W. Yorks. 313 Campanula Trachelium L...by the tram-road from Manor Coal-pits, Sheffield... An adventive here, clearly. |