superunleaded en · ADJ
Pronunciation
- (US) audio
Etymology
Etymology tree Proto-Indo-European *úp Proto-Indo-European *-er Proto-Indo-European *upér Proto-Italic *super Latin super Latin super-lbor. English super- English unleaded English superunleaded From super- + unleaded.
Meanings
- (not-comparable) of unleaded petrol, that has a higher than normal octane number due to the addition of aromatic hydrocarbons