| Subject | English | Irish |
| oil, chem. | American Petroleum Institute gravity | sainmheáchan API |
| environ. | conservation of petroleum resources Controlled utilization, protection and development of exploited and potentially exploitable sources of crude oil to meet current demand and ensure future requirements | acmhainní peitriliam a chaomhnú |
| energ.ind., industr. | European Liquefied Petroleum Gas Association | an Cumann Eorpach um Ghás Peitriliam Leachtaithe |
| gen. | Irish National Petroleum Corporation | Corparáid Náisiúnta Pheitriliam na hÉireann |
| transp., mil., grnd.forc., oil | liquefied petroleum gas | gás peitriliam leachtaithe |
| transp., nautic., energ.ind. | liquefied petroleum gas carrier | tancaer gáis pheitriliam leachtaithe |
| transp., nautic., energ.ind. | liquefied petroleum gas tanker | tancaer gáis pheitriliam leachtaithe |
| transp., nautic., energ.ind. | Liquefied Petroleum Gas Tanker | tancaer gáis pheitriliam leachtaithe |
| oil | liquified Petroleum Gas | gás peitriliam leachtaithe |
| energ.ind. | Organisation of Arab Petroleum Exporting Countries | Eagraíocht Onnmhairithe Peitriliam na dTíortha Arabacha |
| oil, polit. | Organisation of the Petroleum Exporting Countries | Eagraíocht na dTíortha Onnmhairithe Peitriliam |
| fin., polit. | petroleum bitumen | bitiúman peitriliam |
| oil | petroleum coke | cóc peitriliam |
| environ. | petroleum consumption Petroleum belongs to non-renewable energy sources; it is a complex substance derived from the carbonized remains of trees, ferns, mosses, and other types of vegetable matter. The principal chemical constituents of oil are carbon, hydrogen, and sulphur. The various fuels made from crude oil are jet fuel, gasoline, kerosine, diesel fuel, and heavy fuel oils. Major oil consumption is in the following areas: transportation, residential-commercial, industrial and for generating electric power | ídiú peitriliam |
| fin., polit. | petroleum gases | gás peitriliam |
| environ. | petroleum geology The branch of economic geology that relates to the origin, migration and accumulation of oil and gas, and to the discovery of commercial deposits. Its practice involves the application of geochemistry, geophysics, paleontology, structural geology and stratigraphy to the problems of finding hydrocarbons | geolaíocht pheitriliam |
| environ. | petroleum industry Manufacturing industry utilizing complex combination of interdependent operations engaged in the storage and transportation, separation of crude molecular constituents, molecular cracking, molecular rebuilding, and solvent finishing to produce petrochemical products | tionscal peitriliam |
| oil | petroleum jelly | glóthach pheitriliam |
| polit., oil | Protocol concerning imports into the European Union of petroleum products refined in the Netherlands Antilles | Prótacal maidir le hallmhairiú isteach san Aontas Eorpach ar tháirgí peitriliam arna scagadh in Aintillí na hÍsiltíre |
| polit., oil | Protocol concerning imports into the European Union of petroleum products refined in the Netherlands Antilles | Prótacal maidir le hallmhairiú isteach i gComhphobal Eacnamaíochta na hEorpa ar tháirgí peitriliam arna scagadh in Aintillí na hÍsiltíre |
| fin., polit. | residues of petroleum oils | iarmhair d'olaí peitriliam |
| energ.ind. | tonne petroleum equivalent | coibhéis tona ola |
