What does nonmetallic mean?
Nonmetallic is an adjective describing something that is not made of metal or does not have the usual physical or chemical properties of metals. The word is especially important in geology and materials science, where nonmetallic minerals and substances can be distinguished from metallic ones according to their composition and properties. Nonmetallic materials may be lighter, less electrically conductive, or more resistant to corrosion than metals, although their characteristics vary considerably. In everyday contexts, the term can simply mean metal-free, but it is more common in technical and scientific writing. It is also used more broadly to describe surfaces, components, or structures that lack metallic qualities. The word combines the prefix non-, meaning “not,” with metallic, and is often paired with terms such as minerals, materials, coating, and particles.
adjectiveNot made of metal or lacking the characteristic properties of metal. The term is commonly used in geology, chemistry, and materials science to describe minerals, substances, or objects that are not metallic.
- Not made of metal or lacking metallic properties.
- Relating to or consisting of materials that are not metals, especially minerals and substances with nonmetallic chemical properties.
"The factory developed a lightweight, nonmetallic coating for the aircraft panels."
"Quartz is one of the most common nonmetallic minerals."
"The researchers tested the component's nonmetallic surface for signs of corrosion."
Nonmetallic materials can be lighter, less conductive, and more resistant to corrosion than their metal-based counterparts.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does nonmetallic come from?
The word was formed in English by combining the prefix non-, meaning “not,” with metallic, meaning “of or relating to metal.” Its sense follows directly from that compositional structure: it denotes something that is not metallic. The root metal comes through Old French and ultimately from the Latin metallum, a word associated with metal and mining. The related English words metal, metallic, and metallurgy preserve the same ancient vocabulary element.
Related word forms
How nonmetallic is actually used
Nonmetallic is formal and technical, especially common in geology, chemistry, and materials science. In general writing, metal-free or not made of metal may sound more natural.
Easily confused with nonmetallic
Metallic describes a material or surface that contains or has the characteristic properties of metal, whereas nonmetallic indicates the absence of those properties.