English
inflammableness
From inflammable + -ness.
Formed from inflammable + -ness
Proto-Indo-European *bʰl̥g- ‘to shimmer, gleam, shine’
…
Latin flamma ‘flame’
Latin īnflammāre ‘to set on fire’
Medieval Latin īnflammābilis
Middle French inflammable
English inflammable
Today it means
noun The quality of being inflammable; inflammability.
Language periods are conventional ranges, not dates for this word.
Etymograph / inflammableness