| 释义 |
pedate, a. Nat. Hist.|ˈpɛdət|
[ad. L. pedāt-us having feet, f. ped-em foot: see -ate2.]
1. Having divisions like toes, or like the claws of a bird's foot; spec. in Bot. applied to a compound or lobed leaf having a slender midrib passing through the central leaflet or lobe, and two thicker lateral ribs which branch at successive points to form the several midribs of the lateral leaflets or lobes (instead of these all arising from a common central point as in a palmate leaf). Applied also to the venation of a simple leaf when thus arranged. Also † pedated (in same sense).
1753Chambers Cycl. Supp., Botany Table 2, Distinctions of the Leaves..of Plants..Pedated. 1760J. Lee Introd. Bot. ii. xxxi. (1765) 152 Arum, with pedate Leaves. 1835Lindley Introd. Bot. (1848) II. 359. 1857 Henfrey Bot. §95 Palmate (or digitate) leaves are such as have a number of distinct leaflets arising from one point... The only true modification appears to be the pedate leaf, analogous to the pedatisect simple leaf, but with distinct leaflets. 1895Kerner & Oliver Nat. Hist. Plants Index, Pedate venation.
2. Zool. Furnished with or having feet, footed.
1816Kirby & Sp. Entomol. xxii. (1818) II. 272 Two classes..Apodous larvæ,..or those that move without legs,—and Pedate larvæ,..that move by means of legs. 1826Ibid. xlvii. IV. 365 In proportion as pedate animals approach to the human type, their motions are accomplished by fewer organs.
3. Anat. Expanded (at the end) like a foot.
1870Rolleston Anim. Life 27 (Common Fowl). The similarly-expanded, or ‘pedate’ extremity of the external hyposternal process overlaps the posterior sternal ribs.
Hence ˈpedately adv., in a pedate manner.
1821S. F. Gray Nat. Arrangem. Brit. Pl. 71 [Leaves] pedately cut. 1870Hooker Stud. Flora 10 Helleborus... Leaves palmately, pedately or digitately lobed. |