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ascidian
(redirected from Ascidians)

   Also found in: Encyclopedia, Wikipedia 0.02 sec.
as·cid·i·an  (-sd-n)
n.

[From New Latin Ascidia, genus name, from Greek askidion, diminutive of askos, wineskin.]

ascidian [əˈsɪdɪən]
n
1. (Life Sciences & Allied Applications / Zoology) any minute marine invertebrate animal of the class Ascidiacea, such as the sea squirt, the adults of which are degenerate and sedentary: subphylum Tunicata (tunicates)
(Life Sciences & Allied Applications / Zoology)
ascidian tadpole the free-swimming larva of an ascidian, having a tadpole-like tail containing the notochord and nerve cord
adj
(Life Sciences & Allied Applications / Zoology) of, relating to, or belonging to the Ascidiacea
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.ascidian - minute sedentary marine invertebrate having a saclike body with siphons through which water enters and leaves
tunicate, urochord, urochordate - primitive marine animal having a saclike unsegmented body and a urochord that is conspicuous in the larva
Ascidiaceae, class Ascidiaceae - sometimes classified as an order: sea squirts
sea squirt - ascidian that can contract its body and eject streams of water


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? Mentioned in ? References in periodicals archive
 
Natural products effective against certain cancers have been identified: bryostatin from the colonial bryozoan, ecteinascidin from ascidians or sea squirts, and discodermolide from deep-sea sponges.
Electrical coupling of blastomeres in early embryos of ascidians and sea urchins.
 
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