oil: [12] Around the Mediterranean in ancient times the only sort of oil encountered was that produced by pressing olives, and so ‘oil’ was named after the olive. The Greek word for ‘olive’ was elaíā, and from it was derived elaíon ‘olive oil’. This passed into Latin as oleum, and reached English via Old French oile. By now it had begun to be applied to similar substances pressed from nuts, seeds, etc, but its specific modern use for the mineral oil ‘petroleum’ is a much more recent, essentially 19th-century development. => olive
oil (n.)
late 12c., "olive oil," from Anglo-French and Old North French olie, from Old French oile, uile "oil" (12c., Modern French huile), from Latin oleum "oil, olive oil" (source of Spanish, Italian olio), from Greek elaion "olive tree," from elaia (see olive). Old English ?le, Dutch olie, German ?l, etc. all are from Latin. It meant "olive oil" exclusively till c. 1300, when meaning began to be extended to any fatty, greasy substance. Use for "petroleum" first recorded 1520s, but not common until 19c. The artist's oils (1660s), short for oil-color (1530s), are paints made by grinding pigment in oil.
oil (v.)
mid-15c., from oil (n.). Related: Oiled; oiling. An Old English verb in this sense was besmyrian.
例文
1. The price of oil should remain stable for the rest of 1992.
原油価格は1992年の残りの時間で安定しています。
2.Check the oil at regular intervals，and have the car serviced regularly.
定期的にガソリンを検査し、車両を定期的にメンテナンスする。
3. The fossil fuels (coal and oil ) are finite resources.
化石燃料（石炭や石油など）は有限資源に属する。<／
4.Fire may have breached the cargo tanks and set the oil ablaze.
大火当時、貨物船のタンクを燃やして漏れた可能性があり、原油を引火した。
5.Petroleum engineers plan and manage the extraction of oil .