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单词 trochal
释义 trochal, a.|ˈtrɒkəl, ˈtrəʊkəl|
[f. Gr. τροχ-ός wheel + -al1.]
1. Zool. Resembling a wheel; rotiform: as the trochal apparatus, trochal disk, or trochal organ of the Rotifera, an organ of locomotion consisting of two rings of cilia surrounding the mouth.
b. Having a trochal apparatus, as a rotifer: = trochate (Cent. Dict.).
1841–71T. R. Jones Anim. Kingd. (ed. 4) 482 The space between the two layers of the trochal disk.1888Rolleston & Jackson Anim. Life 632 Class Rotifera. Unisegmental Vermes with a retractile trochal apparatus at the anterior end of the body.1899Syd. Soc. Lex., Trochal organ, the characteristic oral organ of the Rotifera.
2. Revolving like a wheel or top. rare—0.
1891in Cent. Dict.
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更新时间:2024/12/22 11:07:23