Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of echinoderm is as below...

Sublapsarian :: Subkingdom (n.) One of the several primary divisions of either the animal, or vegetable kingdom, as, in zoology, the Vertebrata, Tunicata, Mollusca, Articulata, Molluscoidea, Echinodermata, Coelentera, and the Protozoa; in botany, the Phanerogamia, and the Cryptogamia..

Ambulacrum :: Ambulacrum (n.) One of the radical zones of echinoderms, along which run the principal nerves, blood vessels, and water tubes. These zones usually bear rows of locomotive suckers or tentacles, which protrude from regular pores. In star fishes they occupy the grooves along the under side of the rays..

Echinodermatous :: Echinodermatous (a.) Relating to Echinodermata; echinodermal.

Holothurioidea :: Holothurioidea (n. pl.) One of the classes of echinoderms.

Asteridea :: Asteridea (n. pl.) A class of Echinodermata including the true starfishes. The rays vary in number and always have ambulacral grooves below. The body is star-shaped or pentagonal.

Ossicle :: Ossicle (n.) One of numerous small calcareous structures forming the skeleton of certain echinoderms, as the starfishes..

Madreporite :: Madreporite (n.) The madreporic plate of echinoderms.

Zoophyta :: Zoophyta (n. pl.) An extensive artificial and heterogeneous group of animals, formerly adopted by many zoologists. It included the c/lenterates, echinoderms, sponges, Bryozoa, Protozoa, etc..

Asterias :: Asterias (n.) A genus of echinoderms.

Trivium :: Trivium (n.) The three anterior ambulacra of echinoderms, collectively..

Sea Urchin :: Sea urchin () Any one of numerous species of echinoderms of the order Echinoidea.

Crinoidea :: Crinoidea (n. pl.) A large class of Echinodermata, including numerous extinct families and genera, but comparatively few living ones. Most of the fossil species, like some that are recent, were attached by a jointed stem. See Blastoidea, Cystoidea, Comatula..

Perisome :: Perisome (n.) The entire covering of an invertebrate animal, as echinoderm or coelenterate; the integument..

Interambulacrum :: Interambulacrum (n.) In echinoderms, one of the areas or zones intervening between two ambulacra. See Illust. of Ambulacrum..

Annuloida :: Annuloida (n. pl.) A division of the Articulata, including the annelids and allied groups; sometimes made to include also the helminths and echinoderms..

Ophiuroidea :: Ophiuroidea (n. pl.) A class of star-shaped echinoderms having a disklike body, with slender, articulated arms, which are not grooved beneath and are often very fragile; -- called also Ophiuroida and Ophiuridea. See Illust. under Brittle star..

Bivium :: Bivium (n.) One side of an echinoderm, including a pair of ambulacra, in distinction from the opposite side (trivium), which includes three ambulacra..

Ambulacral :: Ambulacral (a.) Of or pertaining to ambulacra; avenuelike; as, the ambulacral ossicles, plates, spines, and suckers of echinoderms..

Echinozoa :: Echinozoa (n. pl.) The Echinodermata.

Fission :: Fission (n.) A process by which certain coral polyps, echinoderms, annelids, etc., spontaneously subdivide, each individual thus forming two or more new ones. See Strobilation..

Random Fonts

Most Popular