METALLOGRAPHY Met`al*log"ra*phy, n. Etym: [L. metallum metal + -graphy: cf. F. métallographie.]
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. Knight.
3. A substitute for lithography, in which metallic plates are used instead of stone. Knight.
METALLOID Met"al*loid, n. Etym: [L. metallum metal + -oid: cf. F. métalloïde.] (a) 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. (b) 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.
METALLOID
Met"al*loid, a.
1. Having the appearance of a metal.
2. (Chem.)
Defn: Having the properties of a nonmetal; nonmetallic; acid; negative.
METALLOIDAL
Met`al*loid"al, a.