Synonyms and Antonyms for gas-helmet

1. gas helmet (n.)

a protective mask with a filter; protects the face and lungs against poisonous gases

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2. helmet (n.)

a protective headgear made of hard material to resist blows

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4. gas (n.)

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; and the spontaneous tendency to become distributed uniformly throughout any container

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6. gas (n.)

a volatile flammable mixture of hydrocarbons (hexane and heptane and octane etc.) derived from petroleum; used mainly as a fuel in internal-combustion engines

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8. gas (n.)

a state of excessive gas in the alimentary canal

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9. gas (v.)

attack with gas; subject to gas fumes

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