metallography |
علم معدنیات ۔ علم فلزات ۔ |
(1) - Metallography (n.) A substitute for lithography, in which metallic plates are used instead of stone. (2) - Metallography (n.) A method of transferring impressions of the grain of wood to metallic surfaces by chemical action. (3) - Metallography (n.) The science or art of metals and metal working; also, a treatise on metals. |
metalloid |
دھات نما ۔ |
(1) - Metalloid (a.) Having the properties of a nonmetal; nonmetallic; acid; negative. (2) - Metalloid (a.) Having the appearance of a metal. (3) - Metalloid (n.) 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. (4) - Metalloid (n.) 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. |