(chemistry) An 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.

(not comparable) Of or relating to the metalloids. / (informal) Characteristic of the metal music genre.

(metallurgy) Of or relating to metallurgy, the study of metals and their properties.

(biology, of a plant species) adapted to grow preferentially in soils containing a higher than normal concentration of a particular metal (such as zinc or copper)

(chemistry) A monocyclic heterocycle consisting of a metal atom and saturated carbon atoms in the ring.

plural of metallacycloalkane

(dated) A person who works in metal (the type of material). / A person skilled in metallurgy.

(metallurgy) Containing a metallic element. Often used to describe ores that are mined commercially.

(inorganic chemistry) Any compound of a metal with a more electropositive element

plural of metallide