Metallo

n. [ L. metallum metal + Gr. &unr_; color. ] The art or process of coloring metals. [ 1913 Webster ]

n. [ L. metallum metal + -graph. ] A print made by metallography. [ 1913 Webster ]

a. Pertaining to, or by means of, metallography. [ 1913 Webster ]

n. One who writes on the subject of metals. [ 1913 Webster ]

n. [ L. metallum metal + -graphy: cf. F. métallographie. ] 1. The science or art of metals and metal working; also, a treatise on metals. [ 1913 Webster ]

2. A method of transferring impressions of the grain of wood to metallic surfaces by chemical action. Knight. [ 1913 Webster ]

3. A substitute for lithography, in which metallic plates are used instead of stone. Knight. [ 1913 Webster ]

n. [ L. metallum metal + -oid: cf. F. métalloïde. ] (a) Formerly, the metallic base of a fixed alkali, or alkaline earth; -- applied by Sir Humphrey 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. [ 1913 Webster ]

a. 1. Having the appearance of a metal. [ 1913 Webster ]

2. (Chem.) Having the properties of a nonmetal; nonmetallic; acid; negative. [ 1913 Webster ]

a. Metalloid. [ 1913 Webster ]