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  • noun

Synonyms for hydrogen

a nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas

References in periodicals archive ?
and those filled with inflammable air by that of gas-balloons.
49) From Italy a similar report expatiated on the same theme: "In Milan it has been prohibited to make experiments with aerostatic globes, which ascend in the air by means of inflammable air, and of which several have fallen in the vicinity of gunpowder magazines, etc.
The Reason that Balloon was out of Sight so soon, the Gentleman believes that that Philosopher was much better acquainted with the different inflammable Airs .