| 释义 |
‖ vitta|ˈvɪtə|
Pl. vittæ |ˈvɪtiː|.
[L. vitta a band, fillet, chaplet, esp. one worn round the head.]
†1. Anat. (See quot.) Obs.—0
1693tr. Blancard's Phys. Dict. (ed. 2), Vitta, that part of the Coat call'd Amnion, which sticks to the Infants Head when 'tis just Born. [Hence in Phillips, 1706, etc.]
2. Rom. Antiq. (See quots.)
Neither of the applications rests upon L. usage.
1726A. Gordon Itin. Sept. 77 He [sc. a Roman soldier] has a Sash or Vitta coming over his Breast, reaching to his Middle. 1847Kitto's Cycl. Bibl. Lit. I. 227/2 The objects above denominated appendages and vittæ..were straps of leather secured to the lower rim of the barrel of a suit of armour, and to the openings for arm-holes.
3. Zool. A band or stripe of colour.
1819Stephens in Shaw's Gen. Zool. XI. ii. 346 The hypochondria [of the Guernsey Partridge] marked with a double black vitta. 1849Johnston in Proc. Berw. Nat. Club II. 365 Mite..marked on the back with a dark vitta or line forming two sigmoid flexures. 1875G. N. Lawrence Birds S.W. Mexico 51 Larus californicus..bill grayish⁓white, behind the yellowish-white tip a black vitta.
b. Bot. (See quot.)
1843Penny Cycl. XXVI. 403/2 The term vittæ is also sometimes applied to the various stripes which are found upon leaves, and which either arise from irregular distribution or entire deficiency of colouring-matter.
4. Bot.
a. One of a number of elongated club-shaped canals or tubes occurring in the pericarp of the fruit of most umbelliferous plants and containing their characteristic oil. Usually in pl.
1830Lindley Nat. Syst. Bot. 4 The ridges are separated by channels, below which are often placed, in the substance of the pericarp, certain linear receptacles of coloured oily matter, called vittæ. 1847Steele Field Bot. 30 Vittæ on the upper half of the fruit only..Heracleum. Vittæ as long as fruit... Peucedanum. 1870Hooker Stud. Flora 156 Trinia..primary ridges subequal, thick, smooth, rugose or plaited, with a large vitta inside each.
b. One of a number of internal projections occurring in the valves of diatomaceous plants.
1888Cassell's Encycl. Dict. 1900Jackson Gloss. Bot. Terms. |
