| metapodiale | Origin: NL. See Metapode. <anatomy> One of the bones of either the metacarpus or metatarsus. Source: Websters Dictionary (01 Mar 1998) |
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| metapodium | Origin: NL. <zoology> Same as Metapode. Source: Websters Dictionary (01 Mar 1998) |
| metapophysis | Origin: NL. See Meta-, and Apophysis. <anatomy> A tubercle projecting from the anterior articular processes of some vertebrae; a mammillary process. Source: Websters Dictionary (01 Mar 1998) |
| metapore | Rarely used term for apertura mediana ventriculi quarti. Origin: meta-+ G. Poros, pore (05 Mar 2000) |
| metaprotein | Nondescript term for a derived protein obtained by the action of acids or alkalies, soluble in weak acids or alkalies but insoluble in neutral solutions; e.g., albuminate. (05 Mar 2000) |
| metaproterenol sulfate | 3,5-Dihydroxy-alpha-[(isopropylamino)methyl]benzyl alcohol sulfate;a sympathomimetic bronchodilator used for the treatment of bronchial asthma and in chronic obstructive lung disease. It has relatively greater effect on b2-adrenergic receptors than b1, conferring some selectivity in relaxing bronchiolar smooth muscle as compared with cardiac stimulation. Synonym: orciprenaline sulfate. (05 Mar 2000) |
| metapsychology | 1. A systematic attempt to discern and describe what lies beyond the empirical facts and laws of psychology, such as the relations between body and mind, or concerning the place of the mind in the universe. 2. In psychoanalysis, or psychoanalytic metapsychology, psychology concerning the fundamental assumptions of the freudian theory of the mind, which entail five points of view: 1) dynamic, concerning psychologic forces; 2) economic, concerning psychologic energy; 3) structural, concerning psychologic configurations; 4) genetic, concerning psychologic origins; 5) adaptive, concerning psychologic relations with the environment. Origin: G. Meta, beyond, transcending, + psychology (05 Mar 2000) |
| metapterygium | <anatomy> The posterior of the three principal basal cartilages in the fins of fishes. Metapteryg"ial. Origin: NL, fr. Gr. After + fin. Source: Websters Dictionary (01 Mar 1998) |
| metapyretic | Synonym: postfebrile. Origin: meta-+ G. Pyretos, fever (05 Mar 2000) |
| metapyrocatechase | <enzyme> An oxidoreductase oxidizing catechol, with oxygen, to 2-hydroxymuconate saemialdehyde. Synonym: metapyrocatechase. (05 Mar 2000) |
| metaraminol | <chemical> Alpha-(1-aminoethyl)-3-hydroxybenzenemethanol. An adrenergic agonist that acts predominantly at alpha adrenergic receptors and also stimulates the release of norepinephrine. It has been used primarily as a vasoconstrictor in the treatment of hypotension. Pharmacological action: adrenergic alpha-agonists, adrenergic agents, sympathomimetic, vasoconstrictor agents. Chemical name: Benzenemethanol, alpha-(1-aminoethyl)-3-hydroxy-, (R-(R*,S*))- (12 Dec 1998) |
| metaraminol bitartrate | L-alpha-(1-Aminoethyl)-m-hydroxybenzyl alcohol hydrogen d-tartrate;a potent sympathomimetic amine used for the elevation and maintenance of blood pressure in acute hypotensive states and topically as a nasal decongestant. (05 Mar 2000) |
| metarhodopsin | A light-activated form of rhodopsin; metarhodopsin I is formed from lumirhodopsin and is converted to metarhodopsin II; metarhodopsin II is the form of rhodopsin that releases all-trans-retinal. (05 Mar 2000) |
| metarteriole | One of the small peripheral blood vessels between the arterioles and the true capillaries that contain scattered groups of smooth muscle fibres in their walls. Origin: meta-+ arteriole (05 Mar 2000) |
| metarubricyte | Orthochromatic normoblast. See: normoblast. Pernicious anaemia type metarubricyte, orthochromatic megaloblast. See: megaloblast. (05 Mar 2000) |