nonmetal

noun

Any of a number of elements, such as oxygen or sulfur, that lack the physical and chemical properties of metals.

In. n chem., an element which has not the character of a metal. See metalloid.

noun

Any one of the set of elements which, as contrasted with the metals, possess, produce, or receive, acid rather than basic properties; a metalloid.

noun

an element, such as phosphorus or chlorine, that does not have the chemical or physical properties of a metal

adjective

not containing or resembling or characteristic of a metal

noun

a chemical element lacking typical metallic properties