1. nonmetal - Noun
2. nonmetal - Adjective
Any one of the set of elements which, as contrasted with the metals, possess, produce, or receive, acid rather than basic properties; a metalloid; as, oxygen, sulphur, and chlorine are nonmetals.
Source: Webster's dictionarynonmetallic elements Source: Internet
The atom of another element (usually nonmetal), whose electron affinity is positive, then accepts the electron(s), again to attain a stable electron configuration, and after accepting electron(s) the atom becomes an anion. Source: Internet
Astatine is usually classified as either a nonmetal or a metalloid ; citation citation metal formation has also been predicted. Source: Internet
Nomenclature When it was realized that some metals form two different binary compounds with the same nonmetal, the two compounds were often distinguished by using the ending -ic for the higher metal oxidation state and the ending -ous for the lower. Source: Internet