trochaladj.

/ˈtrɒkəl/

/ˈtrəʊkəl/

Etymology: < Greek τροχός wheel + -al suffix¹.

a. Zoology. Resembling a wheel; rotiform: as the trochal apparatus, trochal disc, or trochal organ of the Rotifera, an organ of locomotion consisting of two rings of cilia surrounding the mouth.

ΘΚΠ

the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Rotifera > [adjective] > resembling a wheel

trochal1855

1855 T. R. Jones Gen. Outl. Animal Kingdom (ed. 2) ix. 191 The space between the two layers of the trochal disc.

1888 G. Rolleston & W. H. Jackson Forms Animal Life (ed. 2) 632 Class Rotifera. Unisegmental Vermes with a retractile trochal apparatus at the anterior end of the body.

1899 New Sydenham Soc. Lexicon Trochal organ, the characteristic oral organ of the Rotifera.

b. Having a trochal apparatus, as a rotifer: = trochate adj. ( Cent. Dict.).

2. Revolving like a wheel or top. rare.Apparently only attested in dictionaries or glossaries.

ΚΠ

1891 in Cent. Dict.

This entry has not yet been fully updated (first published 1915; most recently modified version published online June 2021).

单词	trochal
释义	trochaladj. /ˈtrɒkəl//ˈtrəʊkəl/ Etymology: < Greek τροχός wheel + -al suffix¹. 1. a. Zoology. Resembling a wheel; rotiform: as the trochal apparatus, trochal disc, or trochal organ of the Rotifera, an organ of locomotion consisting of two rings of cilia surrounding the mouth. ΘΚΠ the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Rotifera > [adjective] > resembling a wheel trochal1855 1855 T. R. Jones Gen. Outl. Animal Kingdom (ed. 2) ix. 191 The space between the two layers of the trochal disc. 1888 G. Rolleston & W. H. Jackson Forms Animal Life (ed. 2) 632 Class Rotifera. Unisegmental Vermes with a retractile trochal apparatus at the anterior end of the body. 1899 New Sydenham Soc. Lexicon Trochal organ, the characteristic oral organ of the Rotifera. b. Having a trochal apparatus, as a rotifer: = trochate adj. ( Cent. Dict.). 2. Revolving like a wheel or top. rare.Apparently only attested in dictionaries or glossaries. ΚΠ 1891 in Cent. Dict. This entry has not yet been fully updated (first published 1915; most recently modified version published online June 2021). < adj.1855
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