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| Subject | English | Romanian |
| environ. | aromatic hydrocarbon Hydrocarbons having an unsaturated ring containing alternating double and single bonds, especially containing a benzene ring | hidrocarbură aromatică |
| environ. | polycyclic aromatic hydrocarbon Hydrocarbons containing two or more closed rings of atoms | hidrocarbură aromatică policiclică |
| chem. | polycyclic aromatic hydrocarbon | hidrocarburi aromatice policiclice |
| chem. | polynuclear aromatic hydrocarbon | hidrocarburi aromatice policiclice |