• WordNet 3.6
    • n echinoderm marine invertebrates with tube feet and five-part radially symmetrical bodies
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Webster's Revised Unabridged Dictionary
    • n Echinoderm (Zoöl) One of the Echinodermata.
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Century Dictionary and Cyclopedia
    • echinoderm Having a prickly covering; echinodermatous.
    • n echinoderm Any one of the Echinodermata.
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Chambers's Twentieth Century Dictionary
    • Echinoderm one of the Echinoder′mata, a class of animals having the skin strengthened by calcareous plates, or covered with spikes
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Chambers's Twentieth Century Dictionary
Gr. echinos, a hedgehog, and derma, skin.


In literature:

The division containing the zoophytes presented the most curious specimens of the two groups of polypi and echinodermes.
"Twenty Thousand Leagues under the Sea" by Jules Verne
The evidence suggests that both the free-moving and the stalked Echinoderms descend from a common stalked Archaean ancestor.
"The Story of Evolution" by Joseph McCabe
Remember Silurian Nautilus, Lingula and other Brachiopods, and Nucula, and amongst Echinoderms, the Silurian Asterias, etc.
"More Letters of Charles Darwin" by Charles Darwin
Take as an illustration the class of Echinoderms.
"The Atlantic Monthly, Vol. IX., March, 1862., No. LIII." by Various
The four great branches are the echinoderms, mollusks, articulates, and vertebrates.
"The Whence and the Whither of Man" by John Mason Tyler
Already the collections of insects, crustacea, worms, molluscs, echinoderms, corals, etc., at the Museum were enormous.
"Lamarck, the Founder of Evolution" by Alpheus Spring Packard
V. Hyates Corals and Echinoderms.
"The Western United States" by Harold Wellman Fairbanks
V. Hyatt's Corals and Echinoderms.
"Textiles" by William H. Dooley
Beautiful results are thus obtained with echinoderms, zoophytes, worms and marine arthropoda.
"Practical Taxidermy" by Montagu Browne
In this torpor the echinoderms and even the molluscs live to-day.
"Creative Evolution" by Henri Bergson
Ehrenberg, the former being at that period engaged in his important researches on the Echinoderms.
"Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 4" by Various
For a large collection of the fish, echinoderms, shells, and corals of the deposits in Suffolk, we are indebted to the labours of Mr. Searles Wood.
"A Manual of Elementary Geology" by Charles Lyell
What are some of the peculiar names given to the larvae in the case of echinoderms, worms, and mollusks?
"A Guide for the Study of Animals" by Worrallo Whitney
This bilaterality becomes still more marked in the highest class of Radiates, the Echinoderms.
"Seaside Studies in Natural History" by Elizabeth Cabot Cary Agassiz
Echinoidea, a group of echinoderms, 61.
"The Biological Problem of To-day" by Oscar Hertwig
The Water-vascular System is a structure common to all Echinoderms; and vessels of a comparable character are found in some worms.
"Stories of the Universe: Animal Life" by B. Lindsay
The structure of echinoderms is radiate.
"The Elements of Geology" by William Harmon Norton
The most important of these are the Echinoderms, Brachiopods and Sagitta.
"The Works of Francis Maitland Balfour, Volume 1" by Francis Maitland Balfour
The tube-feet usually have a tiny sucking disk at the tip, and by means of them the Echinoderm can cling very firmly to rocks.
"Elementary Zoology, Second Edition" by Vernon L. Kellogg

In news:

Sea cucumbers are echinoderms, marine animals in the same phylum as sea urchins, starfish, and sand dollars.
Marine aquarists often find echinoderms to be contradictions.