| echinocyte | <haematology> Erythrocytes that have shrunk (in hypertonic medium) so that the surface is spiky. (19 Jan 1998) |
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| echinoderm | <zoology> One of the Echinodermata. Source: Websters Dictionary (01 Mar 1998) |
| echinodermal | <zoology> Relating or belonging to the echinoderms. Source: Websters Dictionary (01 Mar 1998) |
| Echinodermata | <marine biology> Phylum of exclusively marine animals. The phylum is divided into 5 classes: the Asteroidea (starfish), the Echinoidea (sea urchins), the Ophiuroidea (brittle stars and basket stars), the Holothuroidea (the sea cucumbers) and the Crinoidea (sea lilies and feather stars). (19 Jan 1998) |
| echinodermatous | <zoology> Relating to Echinodermata; echinodermal. Source: Websters Dictionary (01 Mar 1998) |
| echinoid | <zoology> Of or pertaining to the Echinoidea. One of the Echinoidea. Origin: Echinus. Source: Websters Dictionary (01 Mar 1998) |
| echinoidea | <zoology> The class Echinodermata which includes the sea urchins. They have a calcareous, usually more or less spheroidal or disk-shaped, composed of many united plates, and covered with movable spines. See Spatangoid, Clypeastroid. Alternative forms: Echinidea, and Echinoida. Origin: NL. See Echinus, and -oid. Source: Websters Dictionary (01 Mar 1998) |
| echinomycin | <chemical> A toxic polypeptide quinoxaline antibiotic isolated from streptomyces echinatus that binds to DNA and inhibits RNA synthesis. It has antitumour and antibacterial activity. Pharmacological action: antibiotics, antineoplastic, antibiotics, peptide, nucleic acid synthesis inhibitors. Chemical name: Quinomycin A (12 Dec 1998) |
| Echinorhynchus | A genus of acanthocephalid (thorny-headed) worms which originally included species now contained in Macracanthorhynchus, Gigantorhynchus, and other genera. Origin: echino-+ G. Rhynchos, snout (05 Mar 2000) |
| echinosis | A condition in which the red blood cells have lost their smooth outlines, resembling an echinus or sea urchin. Origin: echino-+ G. -osis, condition (05 Mar 2000) |
| Echinosphaerium | <protozoa> Previously Actinosphaerium. Genus of the order Heliozoida of the Protozoa. The organisms are multinucleate and have a starburst of radiating axopodia, the microtubules of which have been much studied. (19 Jan 1998) |
| echinostoma | A genus of intestinal flukes of the family echinostomatidae which consists of many species. They occur in man and other vertebrates. The intermediate hosts are frequently mollusks. (12 Dec 1998) |
| echinostomatidae | A family of flukes (trematoda) characterised by a collar of spines at their anterior end. The body is elongated and is covered with spines, and the two suckers are usually close together. (noble et al., parasitology: the biology of animal parasites, 6th ed, p183) (12 Dec 1998) |
| echinostomiasis | Infection by flukes of the genus echinostoma. (12 Dec 1998) |
| echinozoa | <zoology> The Echinodermata. Origin: NL, fr. Gr. An echinus + an animal. Source: Websters Dictionary (01 Mar 1998) |