Ascidian

Word ASCIDIAN
Character 8
Hyphenation as cid i an
Pronunciations N/A

Definitions and meanings of "Ascidian"

What do we mean by ascidian?

Of or belonging to the Ascidia or Tunicata.

One of the Ascidia or Tunicata; a sea-squirt. noun

One of the Ascidioidea, or in a more general sense, one of the Tunicata. Also as an adj. noun

Any member of the class Ascidiacea (the sea squirts) noun

Minute sedentary marine invertebrate having a saclike body with siphons through which water enters and leaves noun

Any member of the class Ascidiacea (the sea squirts)

Synonyms and Antonyms for Ascidian

  • Synonyms for ascidian
  • Ascidian synonyms not found!!!
  • Antonyms for ascidian
  • Ascidian antonyms not found!

The word "ascidian" in example sentences

It is an interesting fact that vanadium is an essential element to [[ascidian]] s, also known as sea squirts. ❋ Unknown (2008)

Kenjo A, et al., Cloning and characterization of novel ficolins from the solitary ascidian, Halocynthia roretzi. ❋ Unknown (2007)

On the left is a urochordate, an ascidian, a sessile, filter-feeding blob that is anchored to rocks or pilings and sucks in sea water to extract microorganismal meals. ❋ Unknown (2007)

A new transglutaminase-like from the ascidian Ciona intestinalis. ❋ Unknown (2007)

With regard to testaceans, of the walking or creeping species the urchin appears to have the least developed sense of smell; and, of the stationary species, the ascidian and the barnacle. ❋ Unknown (2002)

The so-called tethyum or ascidian has of all these animals the most remarkable characteristics. ❋ Unknown (2002)

If the animal be opened, it is found to have, in the first place, a tendinous membrane running round inside the shell-like substance, and within this membrane is the flesh-like substance of the ascidian, not resembling that in other molluscs; but this flesh, to which I now allude, is the same in all ascidia. ❋ Unknown (2002)

The colour of the ascidian is in some cases sallow, and in other cases red. ❋ Unknown (2002)

As a general rule, then, all testaceans grow by spontaneous generation in mud, differing from one another according to the differences of the material; oysters growing in slime, and cockles and the other testaceans above mentioned on sandy bottoms; and in the hollows of the rocks the ascidian and the barnacle, and common sorts, such as the limpet and the nerites. ❋ Unknown (2002)

Lamellibranch molluscs; they denied the homology of the ascidian nervous system with that of Vertebrates, von Baer being at great pains to show that the ascidian nerve-centre was really ventral in position. ❋ Unknown (N/A)

He pointed out also that the "notochord" was confined to the tail of the ascidian larva. ❋ Unknown (N/A)

In the early days, before the other claimants to the dignity of ancestral form to the Vertebrates -- _Balanoglossus_, Nemertines and the rest -- had put in an appearance, there were two main views on the subject, one upheld by Haeckel, Kowalevsky and others, to the effect that the proximate ancestor of Vertebrates was a form somewhat resembling the ascidian tadpole, the other supported principally by ❋ Unknown (N/A)

Amphioxus therefore might well be considered an extremely simplified and degenerate Cyclostome, and the ascidian larva the last term of this degeneration-series. ❋ Unknown (N/A)

Such is, in my opinion, the nature of the homology existing between the tail of the ascidian tadpole and that of ❋ Unknown (N/A)

In the transition that once took place from one species of ascidian larva to a form similar to the lancelet fish, he sees the new branch diverging in the series of vertebrates. ❋ Rudolf Schmid (N/A)

"The beginning of man an ascidian -- his ultimate development as an angel, a pear-shaped, transparent bag." ❋ Various (N/A)

Supposing this primitive stock to have {140} arisen directly from a very lowly organized animal indeed (such as a nematoid worm, or an ascidian, or a jelly-fish), yet it is not easy to believe that less than two thousand million years would be required for the totality of animal development by no other means than minute, fortuitous, occasional, and intermitting variations in all conceivable directions. ❋ St. George Mivart (N/A)

Amphioxus and Vertebrates, how gill-slits were formed in the walls of the pharynx, and how there existed in the ascidian larva a structure which in position and mode of development was the strict homologue of the vertebrate notochord. ❋ Unknown (N/A)

Kowalevsky's results were accepted by Haeckel, Gegenbaur, Darwin, [391] and many others as conclusive evidence of the origin of Vertebrates from a form resembling the ascidian tadpole; they were extended and amplified by Kupffer [392] in 1870, later by van Beneden and Julin [393] and numerous other workers; they were adversely criticised by ❋ Unknown (N/A)

Cross Reference for Ascidian

  • Ascidian cross reference not found!

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