nonmetal

nonmetal

[non-met-l]
noun Chemistry.
1.
an element not having the character of a metal, as carbon or nitrogen.
2.
an element incapable of forming simple positive ions in solution.

Origin:
1865–70; non- + metal

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World English Dictionary
nonmetal (nɒnˈmɛtəl)
 
n
any of a number of chemical elements that form negative ions, have acidic oxides, and are generally poor conductors of heat and electricity

Collins English Dictionary - Complete & Unabridged 10th Edition
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Encyclopedia Britannica
Encyclopedia

nonmetal

substance that does not exhibit such characteristic properties of metals as hardness, mechanical adaptability, or the ability to conduct electricity. This classification is generally applied to the chemical elements carbon, nitrogen, phosphorus, oxygen, sulfur, selenium, fluorine, chlorine, bromine, iodine, and the noble-gas elements. These elements have few physical properties in common; most are gases, one (bromine) is liquid, and others are solids

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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