† orocentraln.adj.

Origin: Formed within English, by compounding. Etymons: oro- comb. form², central adj.

Etymology: < oro- comb. form² + central adj. N.E.D. (1903) gives the pronunciation as (ō^ərose·ntrăl) /ɔərəʊˈsɛntrəl/.

Zoology. Obsolete. rare.

A. n.

A plate occupying the centre of the oral side of the test of an echinoderm; a peristomal plate.

ΘΚΠ

the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Echinodermata > [adjective] > belonging to or resembling echinoderms > of parts of > occupying centre of oral side

orocentral1884

1884 P. H. Carpenter in Rep. Sci. Results Voy. H.M.S. Challenger: Zool. XI. xxxii. 158 I propose to call it [sc. a plate of calcareous matter] the ‘orocentral’.

1888 G. Rolleston & W. H. Jackson Forms Animal Life (ed. 2) 545 (Echinodermata) In its typical form..there is an orocentral surrounded by five interradial oral plates, and these in their turns by circles of oral radials and interradials.

B. adj.

Designating such a plate.

ΚΠ

1884 P. H. Carpenter in Rep. Sci. Results Voy. H.M.S. Challenger: Zool. XI. xxxii. 159 Its centre is occupied in Symbatherinus by a single orocentral plate.

1885 Athenæum 11 Apr. 475/2 The orocentral plate corresponds with the centrodorsal.

This entry has been updated (OED Third Edition, September 2004; most recently modified version published online June 2018).

单词	orocentral
释义	† orocentraln.adj. Origin: Formed within English, by compounding. Etymons: oro- comb. form², central adj. Etymology: < oro- comb. form² + central adj. N.E.D. (1903) gives the pronunciation as (ō^ərose·ntrăl) /ɔərəʊˈsɛntrəl/. Zoology. Obsolete. rare. A. n. A plate occupying the centre of the oral side of the test of an echinoderm; a peristomal plate. ΘΚΠ the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Echinodermata > [adjective] > belonging to or resembling echinoderms > of parts of > occupying centre of oral side orocentral1884 1884 P. H. Carpenter in Rep. Sci. Results Voy. H.M.S. Challenger: Zool. XI. xxxii. 158 I propose to call it [sc. a plate of calcareous matter] the ‘orocentral’. 1888 G. Rolleston & W. H. Jackson Forms Animal Life (ed. 2) 545 (Echinodermata) In its typical form..there is an orocentral surrounded by five interradial oral plates, and these in their turns by circles of oral radials and interradials. B. adj. Designating such a plate. ΚΠ 1884 P. H. Carpenter in Rep. Sci. Results Voy. H.M.S. Challenger: Zool. XI. xxxii. 159 Its centre is occupied in Symbatherinus by a single orocentral plate. 1885 Athenæum 11 Apr. 475/2 The orocentral plate corresponds with the centrodorsal. This entry has been updated (OED Third Edition, September 2004; most recently modified version published online June 2018). < n.adj.1884
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