incombustible
/,inkəm'bʌstəbl/
Definition
- Adjective:
- Not capable of igniting and burning: Describes a material or substance that cannot be set on fire or consumed by flames. It is resistant to combustion.
Usage
The word "incombustible" is a formal, technical adjective primarily used in scientific, engineering, and safety contexts to describe materials. It is the direct opposite of "combustible" or "flammable."
Examples
- Adjective:
- Asbestos was once valued for being an incombustible material.
- The safe was designed with incombustible insulation to protect important documents from fire.
- Concrete is largely incombustible, making it a good choice for building structures.
Advanced Usage
- "incombustible" as a property: Often used to specify a key characteristic in material specifications or safety standards.
- The building code requires incombustible cladding for high-rise structures.
Variants and Related Words
- Noncombustible (adj): A more common synonym with the same meaning. "Noncombustible" is often preferred in modern technical and regulatory language.
- The storage unit must be constructed of noncombustible materials.
- Fireproof (adj): Similar in meaning but often implies a material has been specially treated or designed to resist fire. "Incombustible" describes an inherent property.
- Fire-resistant (adj): Describes a material that can withstand fire for a period but may eventually burn or degrade, unlike something truly "incombustible."
- Incombustibility (n): The noun form referring to the quality of being incombustible.
- The incombustibility of the mineral wool was tested in the laboratory.
Synonyms
- Nonflammable
- Noncombustible
- Fireproof (context-dependent)
Antonyms
- Combustible
- Flammable
- Inflammable (Note: "Inflammable" means the same as "flammable," not its opposite.)
Adjective
-
not capable of igniting and burning
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