Petroleum

pē-trō′lē-um, n. a liquid inflammable substance i uing or pumped up from the earth in various parts of the world.— ns. Pet′rol , a spirit obtained from petroleum; Petroleur (pā-tro-lār′), one of those Parisians who, with the help of petroleum, set fire to many of the public buildings of Paris in May 1871: an incendiary:— fem. Petroleuse′ .— adj. Petrol if′erous , yielding petroleum. [L. petra , rock, oleum , oil.]