Definitions
1.nounAn element, such as silicon or germanium, intermediate in properties between that of a metal and a nonmetal; especially one that exhibits the external characteristics of a metal, but behaves chemically more as a nonmetal.
2.nounThe metallic base of a fixed alkali, or alkaline earth; applied to sodium, potassium, and some other metallic substances whose metallic character was supposed to be not well defined.
3.adjectiveOf or relating to the metalloids.
4.adjectiveCharacteristic of the metal music genre.