| 单词 |
tripinnate |
| 释义 |
tripinnate, a. Bot.|traɪˈpɪneɪt|
[f. tri- + pinnate.]
Of a leaf: Triply pinnate; having leaflets pinnately arranged on tertiary petioles similarly arranged: see pinnate a. 1 a, and cf. bipinnate. (Abbrev. 3-pinnate.)
1760J. Lee Introd. Bot. iii. vi. (1765) 188 Tripinnate, or Triplicato-Pinnate, when a Petiole bears many Folioles, each of which are Bipinnate. 1870Hooker Stud. Flora 170 Daucus Carota; leaves 3-pinnate. 1880Gray Struct. Bot. iii. §4 (ed. 6) 104 Tripinnate or Thrice Pinnate leaves of a regular sort are rare.
So triˈpinnated a. in same sense; triˈpinnately adv., in a tripinnate manner; tripinnatifid |-ˈætɪfɪd|, tripiˈnnatisect adjs., triply pinnatifid, or pinnatisect; tripinnately divided half-way, or quite, to the base.
1845Lindley Sch. Bot. iv. (1858) 26 b, A[nemone] Pulsatilla (Pasque Flower). Leaves tripinnatifid with linear acute segments. 1847W. E. Steele Field Bot. 95 A[donis] autumnalis..; leaves 3-pinnatifid. 1857Henfrey Elem. Bot. §94 Where tripinnatisect leaves have filiform segments, the term dissected is usually employed. 1876Harley Royle's Mat. Med. 583 Leaves tripinnated, with fine capillary segments like those of fennel. 1891Cent. Dict., Tripinnately. |
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