incapable of burning or not easily set on fire; not flammable
WordReference Random House Learner's Dictionary of American English © 2025
non•flam•mable /ˌnɑnˈflæməbəl/USA pronunciation adj.
WordReference Random House Unabridged Dictionary of American English © 2025- not burning or catching fire easily. Compare inflammable.
non•flam•ma•ble
(non flam′ə bəl),USA pronunciation adj.
- Physicsnot flammable;
not combustible or easily set on fire.
- non- + flammable 1960–65
Collins Concise English Dictionary © HarperCollins Publishers::
'nonflammable' also found in these entries (note: many are not synonyms or translations):