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单词 sporosac
释义

sporosacn.

Etymology: < sporo- comb. form + sac n.2Previous versions of the OED give the stress as: ˈsporosac.
Zoology.
A simple form of gonophore.
ΘΚΠ
the world > animals > invertebrates > subkingdom Metazoa > grade Diploblastica > phylum Coelenterata > [noun] > class Hydrozoa > member of > zooid > reproductive
ovarian vesicle1797
gonophore1859
sporosac1859
phyogemmarium1861
planoblast1871
Medusa1888
1859 Annals Nat. Hist. IV. 140 These medusiform sporosacs.
1861 J. R. Greene Man. Animal Kingdom II. 40 The simplest kind of gonophore consists of a well-defined protuberance from the body-wall, the ‘sporosac’.
1888 G. Rolleston & W. H. Jackson Forms Animal Life (ed. 2) 762 A sporosac..lodged in an ampulla or cavity of the coenosteum.
This entry has not yet been fully updated (first published 1914; most recently modified version published online June 2019).
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