petrolaeum (uncountable) Archaic spelling of petroleum petroleum See also: Petroleum Contents [hide] 1 English 1.1 Alternative forms 1.2 Etymology 1.3 Pronunciation 1.4 Noun 1.4.1 Derived terms 1.4.2 Related terms 1.4.3 Translations English English Wikipedia has an article on: petroleum Alternative forms petrolaeum (archaic) petrol?um (archaic) Etymology From Medieval Latin petroleum, from petra ?(“rock”?) + oleum ?(“oil”?). Pronunciation Noun petroleum 1.a flammable liquid ranging in color from clear to very dark brown and black, consisting mainly of hydrocarbons, occurring naturally in deposits under the Earth's surface Synonyms: crude oil, oil Petrolaeum (英语单词) Petrolaeum是一个英语单词,名词,翻译为石油。 中文名:石油 外文名:petrolaeum,petroleum