• An ascidian
    An ascidian
  • WordNet 3.6
    • n ascidian minute sedentary marine invertebrate having a saclike body with siphons through which water enters and leaves
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Additional illustrations & photos:

Ascidians Ascidians

Webster's Revised Unabridged Dictionary
    • n Ascidian (Zoöl) One of the Ascidioidea, or in a more general sense, one of the Tunicata. Also as an adj.
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Century Dictionary and Cyclopedia
    • ascidian Of or belonging to the Ascidia or Tunicata.
    • n ascidian One of the Ascidia or Tunicata; a sea-squirt.
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Webster's Revised Unabridged Dictionary
Gr. bladder, pouch


In literature:

And we learn all about ascidians, too.
"Scientific American Supplement, No. 363, December 16, 1882" by Various
Organ-Forming Substances in the Eggs of Ascidians.
"Taboo and Genetics" by Melvin Moses Knight, Iva Lowther Peters, and Phyllis Mary Blanchard
Many other Ascidians pass their whole life as pelagic creatures.
"Thomas Henry Huxley; A Sketch Of His Life And Work" by P. Chalmers Mitchell
He pointed out also that the "notochord" was confined to the tail of the ascidian larva.
"Form and Function" by E. S. (Edward Stuart) Russell
Ascidians, placental structure, 81.
"On the Genesis of Species" by St. George Mivart
In each of us there slumber all the impressions of all our predecessors, up to the earliest Ascidian.
"'That Very Mab'" by May Kendall and Andrew Lang
This animal seems to have been more like the larvae of the existing marine Ascidians than any other known form.
"Little Masterpieces of Science:" by Various
Male and female reproductive organs exist in each ascidian.
"The New Gresham Encyclopedia. Vol. 1 Part 2" by Various
GOODSIR, Prof., on the affinity of the lancelet to the ascidians, i.
"The Descent of Man and Selection in Relation to Sex" by Charles Darwin
Ascidians, tunicate animals, 46.
"The Biological Problem of To-day" by Oscar Hertwig

In poetry:

To cut men's throats to help them count their votes
Is asinine--nay, worse--ascidian folly;
Blindness like that would scare the mole and bat,
And make the liveliest monkey melancholy.
"How To Not Settle It" by Oliver Wendell Holmes