eth·yl·ben·zene \| ̷ ̷ ̷ ̷| ̷ ̷ˌ ̷ ̷, | ̷ ̷ ̷ ̷ˌ ̷ ̷| ̷ ̷\noun Etymology: International Scientific Vocabulary ethyl + benzene : a liquid hydrocarbon C6H5C2H5 that is made usually from benzene and ethylene and is used chiefly in the manufacture of styrene