英语词汇“prototroch”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

prototroch n.

Brit.

/ˈprəʊtə(ʊ)trɒk/

U.S.

/ˈproʊdəˌtrɑk/

[ < proto- comb. form + ancient Greek τροχός wheel (see trocho- comb. form)] Zoology (in a trochophore larva) a ring of cilia encircling the body posterior to the apical tuft.

ΘΚΠ

the world > animals > invertebrates > bodies or parts > [noun] > equivalent of the mouth > pre-oral ridge

prototroch1890

the world > animals > invertebrates > bodies or parts > [adjective] > relating to mouth and stomach > of pre-oral ridge surrounding body

prototroch1890

1890 Jrnl. Morphol. 4 213 The prototroch is developed from a series of micromeres, at first single, that encircles the equatorial belt of the embryo.

1932 L. A. Borradaile & F. A. Potts Invertebrata vii. 207 A band of cilia round the base [of the Pilidium larva] constitutes the prototroch.

1987 M. S. Laverack & J. Dando Lect. Notes Invertebr. Zool. (ed. 3) xxvi. 144/2 The chitons and scaphopods have large, yolky eggs that form embryos with a prominent prototroch ring of cilia.

单词	prototroch
释义	> as lemmas prototroch prototroch n. Brit. /ˈprəʊtə(ʊ)trɒk/ , U.S. /ˈproʊdəˌtrɑk/ [ < proto- comb. form + ancient Greek τροχός wheel (see trocho- comb. form)] Zoology (in a trochophore larva) a ring of cilia encircling the body posterior to the apical tuft. ΘΚΠ the world > animals > invertebrates > bodies or parts > [noun] > equivalent of the mouth > pre-oral ridge prototroch1890 the world > animals > invertebrates > bodies or parts > [adjective] > relating to mouth and stomach > of pre-oral ridge surrounding body prototroch1890 1890 Jrnl. Morphol. 4 213 The prototroch is developed from a series of micromeres, at first single, that encircles the equatorial belt of the embryo. 1932 L. A. Borradaile & F. A. Potts Invertebrata vii. 207 A band of cilia round the base [of the Pilidium larva] constitutes the prototroch. 1987 M. S. Laverack & J. Dando Lect. Notes Invertebr. Zool. (ed. 3) xxvi. 144/2 The chitons and scaphopods have large, yolky eggs that form embryos with a prominent prototroch ring of cilia. extracted from proto-comb. form < as lemmas
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> as lemmas