| 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) |
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| 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) |
| metallotherapy | <medicine> Treatment of disease by applying metallic plates to the surface of the body. Origin: L. Metallum metal + E. Therapy. Source: Websters Dictionary (01 Mar 1998) |
| metallothionein | <biochemistry> Small cysteine rich metal binding protein found in the cytoplasm of many eukaryotes. Synthesis can be induced by heavy metals such as zinc, cadmium, copper and mercury and metallothioneins probably serve a protective function. Metallothionein gene promoters are used in studies of gene expression. (18 Nov 1997) |
| metallurgy | The science, art, or technology dealing with processes involved in the separation of metals from their ores, the technique of making or compounding the alloys, the techniques of working or heat-treating metals, and the mining of metals. It includes industrial metallurgy as well as metallurgical techniques employed in the preparation and working of metals used in dentistry, with special reference to orthodontic and prosthodontic appliances. (12 Dec 1998) |
| metalorganic | <chemistry> Pertaining to, or denoting, any one of a series of compounds of certain metallic elements with organic radicals; as, zinc methyl, sodium ethyl, etc. Alternative forms: metallorganic. Origin: Metal, L. Metallum + E. Organic. Source: Websters Dictionary (01 Mar 1998) |
| metals | Electropositive chemical elements characterised by ductility, malleability, luster, and conductance of heat and electricity. They can replace the hydrogen of an acid and form bases with hydroxyl radicals. (12 Dec 1998) |
| metals, actinoid | A series of radioactive elements from actinium, atomic number 89, to and including lawrencium, atomic number 103. They are the theoretical analogs of the rare earth metal series. (12 Dec 1998) |
| metals, alkali | Metals that constitute group ia in the periodic table. They are the most strongly electropositive of the metals. (12 Dec 1998) |
| metals, alkaline earth | Metals that constitute the group IIa in the periodic table. (12 Dec 1998) |
| metals, heavy | metals with high specific gravity, typically larger than 5. They have complex spectra, form coloured salts and double salts, have a low electrode potential, are mainly amphoteric, yield weak bases and weak acids, and are oxidizing or reducing agents (12 Dec 1998) |
| metals, light | Metals with low specific gravity, typically smaller than 5, characterised by a single valence (1, 2, or 3), a simple spectrum, strong electromotive force (positive), and colourless compounds. (12 Dec 1998) |
Synonyms :
Synonyms : Group 1 Elements, Elements, Group 1
Synonyms : Group 2 Elements, Earth Metals, Alkaline, Elements, Group 2
Synonyms :
Synonyms :
| metaldehyde |
A common active ingredient in slug and snail bait. Moderately toxic and not very persistent, it poses a major hazard to pets, who are attracted to it and may think it is food
출처: www.georgiastrait.org/toxicglossary3.php
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| metallizing |
(1) The application of an electrically conductive metallic layer to the surface of nonconductors. (2) The application of metallic coatings by nonelectrolytic procedures such as spraying of molten metal and deposition from the vapor phase.
출처: www.ntu.edu.sg/home/asjqiu/corrosion/J-Q.HTM
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| metalloid |
Elements having properties of both metals and nonmetals.
출처: jmsscienceweb.tripod.com/vocabulary.htm
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| metalloid |
elements such as arsenic and selenium, which have both metallic and non-metallic properties
출처: eies.njit.edu/~kebbekus/definitions_for_chapter_7....
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| metallurgy |
The science and technology of metals and alloys. Process metallurgy is concerned with the extraction of metals from their ores and with refining of metals; physical metallurgy, with the physical and mechanical properties of metals as affected by composition, processing, and environmental conditions; and mechanical metallurgy, with the response of metals to applied forces.
출처: www.tdcoating.com/td_glossary_terms5.htm
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| metal | an engineer trained in the extraction and refining and alloying and fabrication of metals |
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| metal | an engineer trained in the extraction and refining and alloying and fabrication of metals |
| metal | the science and technology of metals |
| metal | the activity of making things out of metal in a skillful manner |
| metal | the metal parts of something |
| metal | someone who works metal (especially by hammering it when it is hot and malleable) |
| metal | the activity of making things out of metal in a skillful manner |
| metal | a vise with two parallel iron jaws and a wide opening below |
| metal | factory where metal castings are produced |