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单词 ovicyst
释义

† ovicystn.

Origin: Formed within English, by compounding. Etymons: ovi- comb. form1, cyst n.
Etymology: < ovi- comb. form1 + cyst n. N.E.D. (1904) gives the pronunciation as (ōu·visist) /ˈəʊvɪsɪst/.
Zoology. Obsolete. rare.
T. H. Huxley's term for: a chamber in which the embryos of thaliacean tunicates develop.
ΘΚΠ
the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > division Molluscoidea > [noun] > division Tunicata > class Ascidiacea > member of > parts of
ovicyst1877
1877 T. H. Huxley Man. Anat. Invertebrated Animals x. 622 The incubatory pouch may be termed the ovicyst.

Derivatives

† ovicystic adj. Obsolete rare Apparently only attested in dictionaries or glossaries.
ΘΚΠ
the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > division Molluscoidea > [adjective] > of or belonging to Tunicata > of or relating to Ascidia > parts of
epicardiac1886
epicardial1888
ovicystic1890
1890 Cent. Dict. Ovicystic, pertaining to the ovicyst or incubatory pouch of an ascidian.
This entry has been updated (OED Third Edition, March 2005; most recently modified version published online June 2021).
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n.1877
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