ascidianadj.n.
/əˈsɪdɪən/, U.S. /əˈsɪdiən/ Zoology.
A. adj.
Of or pertaining to the Ascidia (or Ascidiæ), a group of animals belonging to the tunicate Mollusca, considered by evolutionists to constitute a link in the development of the Vertebrata.
ΘΚΠ
the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > division Molluscoidea > [adjective] > of or belonging to Tunicata > of or relating to Ascidia
ascidian1856
1856 S. P. Woodward Man. Mollusca iii. 332 The relation between the Ascidian test and mantle is that of the epidermis to the cutis vera.
1878 N. Amer. Rev. 127 58 Our ascidian forefathers.
B. n.
A member of this group.
ΘΚΠ
the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > division Molluscoidea > [noun] > division Tunicata > class Ascidiacea > member of
ascidian1835
sea-squirt1850
sea-barrel1876
sea-sac1876
squirt1891
1835 W. Kirby On Power of God in Creation of Animals I. vi. 192 The Tunicaries or Ascidians as some call them.
1875 A. Helps Social Pressure ix. 136 If he started as a gelatinous ascidian, how he has got on in the world!
Derivatives
ascidiarium n. /əˌsɪdɪˈɛərɪəm/ [see -arium suffix] the aggregate mass of organisms in compound ascidians.
/əˌsɪdɪˈɛərɪəm/ [see -arium suffix] the aggregate mass of organisms in compound ascidians.ΚΠ
1877 T. H. Huxley Man. Anat. Invertebrated Animals x. 610 In the compound or social Tunicata many ascidiozooids..are united by a common test into an ascidiarium.
aˈscidioid adj. resembling the Ascidia.
ΘΚΠ
the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > division Molluscoidea > [adjective] > of or belonging to Tunicata > of or relating to Ascidia > resembling
ascidioid1880
1880 New Sydenham Soc. Lexicon at Ascidia The tunicate or ascidioid Division of the Mollusca.
ascidiozooid n. /əˌsɪdɪəʊˈzəʊɔɪd/ one of the organisms forming an ascidiarium.
/əˌsɪdɪəʊˈzəʊɔɪd/ one of the organisms forming an ascidiarium.ΚΠ
1877Ascidiozooids [see ascidiarium n.].
This entry has not yet been fully updated (first published 1885; most recently modified version published online December 2021).
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adj.n.1835