1. [ noun ] (chemistry) the state of matter distinguished from the solid and liquid states by: relatively low density and viscosity; relatively great expansion and contraction with changes in pressure and temperature; the ability to diffuse readily
Related terms: state_of_matter gasify
2. [ noun ] (chemistry) a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely
Related terms: fluid air oxygen chlorine hydrogen nitrogen plasma ideal_gas atmosphere ozone exhaust fluorine phosgene blow_gas poison_gas phosphine sewer_gas cyanogen butylene nitric_oxide inhalant greenhouse_emission compressed_gas afterdamp ethylene propane butane noble_gas formaldehyde producer_gas water_gas liquefied_petroleum_gas ammonia propylene methane sublimate sulfur_dioxide tear_gas nitrogen_dioxide arsine firedamp mephitis ethane gasify
3. [ noun ] (chemistry) a volatile flammable mixture of hydrocarbons (hexane and heptane and octane etc.) derived from petroleum; used mainly as a fuel in internal-combustion engines
Synonyms: gasoline petrol gasolene
Related terms: fuel hydrocarbon unleaded_gasoline leaded_gasoline napalm gasohol
4. [ verb ] (military) attack with gas; subject to gas fumes

"The despot gassed the rebellious tribes"

Related terms: attack teargas gassing
5. [ noun ] a state of excessive gas in the alimentary canal
Synonyms: flatulency flatulence
Related terms: physiological_state
6. [ noun ] a pedal that controls the throttle valve
Synonyms: accelerator throttle gas_pedal gun accelerator_pedal

"he stepped on the gas"

Related terms: pedal car airplane accelerate
7. [ verb ] show off
Synonyms: boast brag bluster vaunt shoot_a_line blow swash gasconade tout
Related terms: overstate gloat puff bravado boast braggadocio brag loudmouth blowhard
8. [ noun ] a fossil fuel in the gaseous state; used for cooking and heating homes
Synonyms: natural_gas
Related terms: fossil_fuel methane gasify
Similar spelling:   Gaus