不ふ燃ねん

noun, noun which may take the genitive case particle 'no'

incombustible; nonflammable

Refers to materials that do not burn; often used in waste classification (不燃ごみ).

• 不ふ燃ねんごみは月げつ曜よう日びに出だしてください。

  Please put out non-burnable trash on Monday.

• この建けん材ざいは不ふ燃ねん性せいが高たかい。

  This building material has high incombustibility.