noun, noun which may take the genitive case particle 'no'
unleaded; lead-free
Primarily used for gasoline/petrol; also appears in compound terms like 無鉛ガソリン. The noun and no-adjective uses are both common.
This car uses unleaded gasoline.
Please fill it with unleaded fuel.
unleaded gasoline; unleaded petrol
regular unleaded gasoline; regular unleaded petrol
Compound of 無 (mu, 'without') and 鉛 (en, 'lead'), literally 'lead-free'. A straightforward Sino-Japanese technical term.