| 释义 |
sinistrorsal, a.|sɪnɪˈstrɔːsəl|
[f. next + -al1.]
a. (See first quot.)
b. = sinistral a. 6.
1828–32Webster (citing Henry), Sinistrorsal, rising from left to right, as a spiral line or helix. 1840Cuvier's Anim. Kingd. 345 The whorls turn obliquely to the right side in nearly all the species, but in a small number to the left; and the latter are named reversed, (or sinistrorsal). 1842Penny Cycl. XXII. 51/2 Shell sinistrorsal, pyriform, very ventricose. 1868Nat. Encycl. I. 697 Ancylus, a genus of little fresh-water snails..; the animal being, as Rang considers, sinistrorsal.
Hence siniˈstrorsally adv.
1884Proc. Zool. Soc. May 364 The heterostrophe or sinistrorsally spiral apex. |