ascidian [ə sid′ē ən]
[< ModL < Gr askidion: see ASCIDIUM]
any of a class (Ascidiacea) of fixed tunicates; sea squirt

English World dictionary. . 2014.

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  • Ascidian — As*cid i*an, n. [Gr. ? bladder, pouch.] (Zo[ o]l.) One of the Ascidioidea, or in a more general sense, one of the Tunicata. Also as an adj. [1913 Webster] || …   The Collaborative International Dictionary of English

  • ascidian — noun Etymology: New Latin Ascidia, group comprising tunicates, from Ascidium, genus name, from Greek askidion, diminutive of askos wineskin, bladder Date: 1835 any of a class (Ascidiacea) of solitary or colonial sessile tunicates having an… …   New Collegiate Dictionary

  • ascidian — /euh sid ee euhn/, Zool. n. 1. any solitary or colonial tunicate of the class Ascidiacea, exhibiting in the larval stage the vertebrate characteristics of a notocord and hollow nerve cord. adj. 2. belonging or pertaining to the class Ascidiacea.… …   Universalium

  • ascidian — noun Any member of the class Ascidiacea (the sea squirts) …   Wiktionary

  • ascidian — [ə sɪdɪən] noun Zoology a sea squirt. Origin C19: from mod. L. plural Ascidia (genus name), from Gk askidion, dimin. of askos wineskin …   English new terms dictionary

  • ascidian — as·cid·i·an …   English syllables

  • ascidian — as•cid•i•an [[t]əˈsɪd i ən[/t]] n. 1) zool. any tunicate of the class Ascidiacea, having in the larval stage a notochord, a characteristic of the embryonic vertebrate 2) zool. belonging or pertaining to the class Ascidiacea • Etymology: 1855–60;… …   From formal English to slang

  • ascidian — /əˈsɪdiən/ (say uh sideeuhn) noun 1. a sea squirt, a sessile protochordate. –adjective 2. of or belonging to the Ascidiacea or Tunicata. {ascidi(um) + an} …  

  • ascidian —   n. sea squirt …   Dictionary of difficult words

  • ascidian — n. Zool. any tunicate animal of the class Ascidiacea, often found in colonies, the adults sedentary on rocks or seaweeds, e.g. the sea squirt. Etymology: mod.L Ascidia f. Gk askidion dimin. of askos wineskin …   Useful english dictionary

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