Without gas; not containing or producing gas.
From 'gas' plus the suffix '-less' (lacking), a productive English formation creating adjectives meaning the absence or lack of something.
The word 'gasless' gained new importance after 1973 during the oil crisis when 'gasless' days were mandated and stations ran out of fuel—language adapting to describe sudden shortages.
Complete word intelligence in one call. Free tier — 50 lookups/day.