| 释义 |
excurrent, a.|ɛkˈskʌrənt|
[ad. L. excurrent-em, pr. pple. of excurrĕre: see excur.]
1. That runs out or forth. Of arterial blood: That flows from the heart.
1826Kirby & Sp. Entomol. xxxii. (1828) III. 293 The excurrent (or arterial) stream took its course along the inner margin. Ibid. xxxix. IV. 92 In the excurrent part of its course. 1887W. J. Sollas in Encycl. Brit. XXII. 413/1 s.v. Sponges, The insoluble residue..is carried out through the oscule by the excurrent water.
†2. Passing beyond bounds or limits; overflowing, superabundant (in quot. fig.). Obs. rare—1.
1605Timme Quersit. i. iv. 12 Restraining a matter excurrent, within bondes and limits.
3. Admitting of or affording an exit.
1854Woodward Mollusca (1856) 277 Fig. 185..showing the relative extent of the liver and ovarium..e, excurrent orifice. 1887W. J. Sollas in Encycl. Brit. XXII. 414/2 s.v. Sponges, In higher forms of sponges the chambers cease to open abruptly into the excurrent canals.
4. Bot.
a. (See quot. 1835.)
b. Projecting beyond the tip or margin, as when the midrib of a leaf is continued beyond the apex.
a.1835Lindley Introd. Bot. (1848) II. 362 Excurrent; in which the axis remains always in the centre, all the other parts being regularly disposed round it; as the stem of abies. 1880Gray Struct. Bot. iii. §3. 40.
b.1847in Craig. 1870Hooker Stud. Flora 375 Horned Pond-weed..Stamen 1..connective excurrent. 1882Gard. Chron. XVIII. 70 Excurrent at the apex. |