多た環かん芳ほう香こう族ぞく炭たん化か水すい素そ

noun

polycyclic aromatic hydrocarbon; PAH

Technical term in chemistry for a class of organic compounds with multiple fused aromatic rings. Often abbreviated as PAH in English contexts.

• 多た環かん芳ほう香こう族ぞく炭たん化か水すい素そは大た気いき汚お染せん物ぶっ質しつの一いっ種しゅです。

  Polycyclic aromatic hydrocarbons are a type of air pollutant.

• この研けん究きゅうでは、土ど壌じょう中ちゅうの多た環かん芳ほう香こう族ぞく炭たん化か水すい素その濃のう度どを測そく定ていした。

  In this study, the concentration of polycyclic aromatic hydrocarbons in the soil was measured.