| 释义 |
monotrochal, a. Zool.|məˈnɒtrəkəl|
[f. mod.L. monotroch-us (Ehrenberg, a. Gr. µονό-τροχος: see prec.) + -al1.]
a. Belonging to the division Monotrocha of rotifers, in which the trochal disk or ‘wheel’ is single.
b. Having a single band of cilia, as the larva of a polychæte worm.
c. Belonging or pertaining to the division Monotrocha of Hymenoptera, in which the trochanter has but one joint. So monoˈtrochian a. (n. a monotrochal rotifer), moˈnotrochous a.
1845Encycl. Metrop. VII. 266/1 The Wheel Organs are either Monotrochous, i.e. have a simple connected ring of cilia, or [etc.]. 1854Adams, etc. Man. Nat. Hist. 341 Rotifers... I Order.—Monotrochians (Monotrocha). 1886A. G. Bourne in Encycl. Brit. XXI. 8/1 A monotrochal polychætous larva. 1890Century Dict., Monotrochian [a. and n.]. 1895Cambr. Nat. Hist. V. 494 In the stinging Hymenoptera the trochanters are usually of a single piece, and these Insects are called monotrochous. |