可燃性|かねんせいkanensei

1. nouncombustibility; inflammability
2. no-adjectivecombustible; inflammable

• Related引火性いんかせいWrittenWritten/formal term for igniting easily when exposed to a fire source; typical of petrol and solvents. 「可燃性」 broadly means able to burn.
• Related燃焼性WrittenWritten/formal technical term for how readily and in what state something burns, as in 「燃焼性試験」; 「可燃性」 only says whether a thing can burn.
• Antonym不燃性ふねんせいWrittenWritten/formal antonym: the property of not burning or being extremely hard to burn; the opposite of 「可燃性」. Common for building materials and regulations.
• Antonym難燃性なんねんせいWrittenWritten/formal antonym: hard to ignite and slow to spread flame once lit — between 「可燃性」 and 「不燃性」, as in 「難燃性素材」.

Default to 「可燃性」 for the general ability to burn, as in 「可燃性ガス」. Use 「燃焼性」 for how something burns in technical tests, 「引火性」 for quick ignition (petrol, solvents), 「不燃性」 for non-burning materials, 「難燃性」 for flame-retardant ones.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. よく燃もえる性質せいしつ。