Found 2 items, similar to metalloid.
English → English (WordNet) Definition: metalloid metalloid adj : of or being a nonmetallic element that has some of the properties of metal; “arsenic is a metalloid element”
English → English (gcide) Definition: Metalloid Metalloid \Met"al*loid\, n. [L. metallum metal + -oid: cf. F. m['e]tallo["i]de.] (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] Metalloid \Met"al*loid\, a. 1. Having the appearance of a metal. [1913 Webster] 2. (Chem.) Having the properties of a nonmetal; nonmetallic; acid; negative. [1913 Webster]