non-inflammable

Resistant to fire

Non-inflammable means not capable of catching fire or burning.

The word is synonymous with nonflammable and fireproof: non-inflammable building materials.

Despite the negative prefix, non-inflammable is distinct from inflammable, which counterintuitively means flammable—a source of persistent confusion that has led safety standards to prefer nonflammable or non-flammable.

materials

asbestos

Fibrous fireproofing mineral

ceramic · gypsum · vermiculite · perlite · glass wool · calcium silicate · cement board · fire brick · slate · fire blanket

properties

noncombustible

Unable to catch fire

fireproof · fire-resistant · incombustible · unburnable · heatproof

substances

nitrogen

Element seven, colorless gas

  • argonUnreactive element eighteen
  • carbon dioxideRespiration byproduct, photosynthesis fuel
  • halonFire-suppressing halogenated compound

sand · water · helium · neon · phosphate · tetrachloride · inert gas · noble gas

treatments

intumescent

Swells from heat exposure

flameproofing · fireproofing

Opposites
combustibility

non-inflammableinflammable

Able to catch fire

flammable · combustible · incendiary · ignitable · explosive

Family

inflammable, flame, flaming, flamed, flames, flamer, flameless, inflame, inflamed

Familiarity
Top 500,000
Profile
Used worldwide · Timeless · Everyday, not technical · Rated G