olefiant gas

olefiant gas.

See ethylene.

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gas,

n a fluid with no definite volume or shape whose molecules are practically unrestricted by cohesive forces.

gas, laughing,

n See nitrous oxide.

gas, noble,

n a gas that will not oxidize; the inert gases (e.g., helium and neon).

gas, olefiant,

n a machine that uses ethylene oxide gas to sterilize objects that cannot withstand high temperatures, such as soft plastic and cloth.