| holostei | <zoology> An extensive division of ganoids, including the gar pike, bowfin, etc.; the bony ganoids. Origin: NL, fr. Gr. "olos whole + a bone. Source: Websters Dictionary (01 Mar 1998) |
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| holosteric | Wholly solid; said of a barometer constructed of solid materials to show the variations of atmospheric pressure without the use of liquids, as the aneroid. Origin: Holo + Gr.stereos solid. Source: Websters Dictionary (01 Mar 1998) |
| holostomata | <zoology> An artificial division of gastropods, including those that have an entire aperture. Origin: NL, fr. Gr. "olos whole + stoma, -atos, mouth. Source: Websters Dictionary (01 Mar 1998) |
| holostomate | <zoology> Same as Holostomatous. Source: Websters Dictionary (01 Mar 1998) |
| holostomatous | <zoology> Having an entire aperture; said of many univalve shells. Source: Websters Dictionary (01 Mar 1998) |
| holostome | <zoology> One of the Holostomata. Origin: Holo + Gr. Stoma mouth. Source: Websters Dictionary (01 Mar 1998) |
| holostraca | <zoology> A division of phyllopod Crustacea, including those that are entirely covered by a bivalve shell. Origin: NL, fr. Gr. Whole + shell of a testacean. Source: Websters Dictionary (01 Mar 1998) |
| holosystolic | Lasting throughout systole, extending from first to second heart sound. Synonym: holosystolic. (05 Mar 2000) |
| holosystolic murmur | A murmur occupying the entire systolic interval, from first to second heart sounds. Synonym: holosystolic murmur. (05 Mar 2000) |
| holotelencephaly | Holoprosencephaly associated with arrhinencephaly. Origin: holo-+ telencephalon (05 Mar 2000) |
| holothure | <zoology> A holothurian. Origin: L. Holothuria, pl, a sort of water polyp, Gr. Source: Websters Dictionary (01 Mar 1998) |
| holothurin | <chemical> A highly toxic saponin occurring in the tropical sea cucumber, holothuriodeae, phylum echinodermata. This marine toxin is an anionic surfactant, haemolyzing red blood corpuscles. It acts irreversibly to destroy the excitability at cholinergic neuromuscular junctions. Chemical name: Holothurin (12 Dec 1998) |
| holothurins | A class of highly toxic sulfated steroid glycosides secreted by sea cucumbers (Holothurioidea). (05 Mar 2000) |
| holothurioidea | <zoology> One of the classes of echinoderms. They have a more or less elongated body, often flattened beneath, and a circle of tentacles, which are usually much branched, surrounding the mouth; the skin is more or less flexible, and usually contains calcareous plates of various characteristic forms, sometimes becoming large and scalelike. most of the species have five bands (ambulacra) of sucker-bearing feet along the sides; in others these are lacking. In one group (Pneumonophora) two branching internal gills are developed; in another (Apneumona) these are wanting. Synonym: Holothurida, Holothuridea, and Holothuroidea. Origin: NL. See Holothure, and -oid. Source: Websters Dictionary (01 Mar 1998) |
| holotricha | <zoology> A group of ciliated Infusoria, having cilia all over the body. Origin: NL, fr. Gr. Whole +, a hair. Source: Websters Dictionary (01 Mar 1998) |