| 释义 |
‖ trochus|ˈtrəʊkəs, ˈtrɒkəs|
Pl. trochi |-kaɪ|, also trochuses.
[L., a. Gr. τροχός, f. τρέχειν to run.]
1. Gr. and Rom. Antiq. A wheel or hoop, used in athletic exercises or as a plaything.
1706Phillips (ed. Kersey), Trochus, a Wheel, a Top for Children to play with. 1734tr. Rollin's Anc. Hist. (1768) I. Pref. 88 The exercises of leaping, throwing the dart, and that of the trochus or wheel. 1847J. Leitch tr. C. O. Müller's Anc. Art §351. (1850) 427 Ganymede with trochus.
†2. = troche2. Obs. rare—1.
1748tr. Vegetius' Distemp. Horses 85 Three Trochus's or Cakes of Sinoper.
3. Zool.
a. A genus of gastropod molluscs, having a top-shaped or conical shell; the type of the family Trochidæ or top-shells.
1753Chambers Cycl. Supp., Trochus,..a genus of shells. 1774Goldsm. Nat. Hist. (1776) VII. 33 The trunk of the Trochus is fleshy, muscular, supple, and hollow. 1851Woodward Mollusca (1856) 12 The trochi and purpuræ are found at low-water, amongst the sea-weed. 1859H. Kingsley G. Hamlyn xxxiv. (1894) 325 They fell to gathering shells... Trochuses, as big as one's fist.
attrib. and Comb.1774Goldsm. Nat. Hist. IV. 22 Snails of the trochus kind. 1889Science-Gossip XXV. 168 Trochus-shaped rotulites.
b. The internal ring of cilia in the trochal organ of a rotifer.
1888Rolleston & Jackson Anim. Life 632 The trochal apparatus..appears to consist typically of an internal præoral ring of long cilia, the trochus, and an external ring of finer cilia, the cingulum. |