| metalloflavoenzyme | <enzyme> An enzyme that contains one of the flavin nucleotides and at least one metal ion as a required part of its active structure. (05 Mar 2000) |
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| metalloflavoprotein | A protein containing a flavin entity and at least one metal ion. (05 Mar 2000) |
| metallograph | A print made by metallography. Origin: L. Metallum metal + -graph. Source: Websters Dictionary (01 Mar 1998) |
| metallographic | Pertaining to, or by means of, metallography. Source: Websters Dictionary (01 Mar 1998) |
| metallographist | One who writes on the subject of metals. Source: Websters Dictionary (01 Mar 1998) |
| metallography | 1. The science or art of metals and metal working; also, a treatise on metals. 2. A method of transferring impressions of the grain of wood to metallic surfaces by chemical action. 3. A substitute for lithography, in which metallic plates are used instead of stone. Origin: L. Metallum metal: cf. F. Metallographie. Source: Websters Dictionary (01 Mar 1998) |
| metalloid | Formerly, the metallic base of a fixed alkali, or alkaline earth; applied by Sir H. Davy to sodium, potassium, and some other metallic substances whose metallic character was supposed to be not well defined. Now, one of several elementary substances which in the free state are unlike metals, and whose compounds possess or produce acid, rather than basic, properties; a nonmetal; as, boron, carbon, phosphorus, nitrogen, oxygen, sulphur, chlorine, bromine, etc, are metalloids. Origin: L. Metallum metal: cf. F. Metalloide. Source: Websters Dictionary (01 Mar 1998) |
| metallophilia | Affinity for metal salts; e.g., the affinity of the cytoplasm of cells of the reticuloendothelial system for silver carbonate stain and salts of gold and iron. Origin: metallo-+ G. Philos, fond (05 Mar 2000) |
| metallophobia | <psychology> Morbid fear of metal objects. Origin: G. Metallon, metal, + phobos, fear (05 Mar 2000) |
| metalloporphyrin | A combination of a porphyrin with a metal, e.g., Fe (haematin), Mg (as in chlorophyll), Cu (in haemocyanin), Zn. (05 Mar 2000) |
| metalloporphyrins | Porphyrins which are combined with a metal ion. The metal is bound equally to all four nitrogen atoms of the pyrrole rings. They possess characteristic absorption spectra which can be utilised for identification or quantitative estimation of porphyrins and porphyrin-bound compounds. (12 Dec 1998) |
| metalloprotein | <protein> A protein that contains a bound metal ion as part of its structure. (18 Nov 1997) |
| metalloproteinases | <enzyme> Peptide hydrolases which use a metal in the catalytic mechanism. This group of enzymes is inactivated by metal chelators. Registry number: EC 3.4.24 (12 Dec 1998) |
| metalloproteins | Proteins that have one or more tightly bound metal ions forming part of their structure. (12 Dec 1998) |
| metalloscopy | Testing the action of various metals applied to the surface of the body. Origin: metallo-+ G. Skopeo, to examine (05 Mar 2000) |