| Marfan's syndrome | <syndrome> A hereditary condition of the connective tissue. Symptoms and signs include tall lean body type, irregular or unsteady gait, long extremities (including fingers and toes), abnormal joint flexibility, flat feet, stooped shoulders, dislocation of the optic lens and aneurysms of the aorta. Affects 1 in 50,000 people. Probably a collagen fibril assembly disorder since it can be mimicked in mice by aminonitriles that interfere with crosslinking. Inheritance: autosomal dominant. (06 Oct 1997) |
|---|---|
| Marfan, Antoine Bernard-Jean | <person> French paediatrician, 1858-1942. See: Marfan's disease, Marfan's law, Marfan's syndrome. (05 Mar 2000) |
| marfanoid | An obsolete term used of those whose phenotype bears a superficial resemblence to that of Marfan's syndrome. (05 Mar 2000) |
| Marg, Elwin | <person> U.S. Physicist, *1918. See: Mackay-Marg tonometer. (05 Mar 2000) |
| margarate | <physiology> A compound of the so-called margaric acid with a base. Origin: Cf. F. Margarate. Source: Websters Dictionary (01 Mar 1998) |
| margaric | Pertaining to, or resembling, pearl; pearly. Margaric acid. <physiology> A white, crystalline substance, C17H34O2 of the fatty acid series, intermediate between palmitic and stearic acids, and obtained from the wax of certain lichens, from cetyl cyanide, and other sources. Origin: Cf. F. Margarique. See Margarite. Source: Websters Dictionary (01 Mar 1998) |
| margarin | <physiology> A fatty substance, extracted from animal fats and certain vegetable oils, formerly supposed to be a definite compound of glycerin and margaric acid, but now known to be simply a mixture or combination of tristearin and teipalmitin. Origin: Cf. F. Margarine. See Margarite. Source: Websters Dictionary (01 Mar 1998) |
| margarine | <chemical> A butterlike product made of refined vegetable oils, sometimes blended with animal fats, and emulsified usually with water or milk. It is used as a butter substitute. Chemical name: Margarine (12 Dec 1998) |
| margarine disease | Erythema multiforme caused by an emulsifying agent used in the manufacture of margarine. (05 Mar 2000) |
| margarite | 1. A pearl. 2. <chemical> A mineral related to the micas, but low in silica and yielding brittle folia with pearly luster. Origin: L. Margarita, Gr. A pearl; cf. F. Marguerite. Source: Websters Dictionary (01 Mar 1998) |
| margaritic | <physiology> Margaric. Origin: Cf. F. Margaritique. Source: Websters Dictionary (01 Mar 1998) |
| margarodite | <chemical> A hidrous potash mica related to muscovite. Origin: Gr. Pearl-like. Source: Websters Dictionary (01 Mar 1998) |
| margarone | <chemistry> The ketone of margaric acid. Origin: Margaric + -one. Source: Websters Dictionary (01 Mar 1998) |
| Margaropus | A genus of ixodid ticks closely resembling Boophilus, but not having festoons or ornamentations; they are characterised by greatly enlarged posterior legs and a prolonged median plate. Origin: G. Margaros, pearl oyster, + pous, foot (05 Mar 2000) |
| Margaropus winthemi | The one-host South American winter horse tick; it also sometimes attacks cattle and sheep. (05 Mar 2000) |