A gas used as an anaesthetic.
Gas sometimes used as a general anesthetic. Nausea and vomiting commonly occur after its use.
An inflammable gas sometimes used as an anesthetic administered by inhalation. There are usually no toxic effects, but nausea and vomiting commonly occur after its use.
A flammable, explosive, colorless gas, CH2CH2, prepared from alcohol by dehydration. It is present in illuminating gas. It is colorless and has a sweetish taste but a pungent, foul odor. It is lighter than air and diffuses when liberated.