The Collaborative International Dictionary
Inflammable air
Inflammable \In*flam"ma*ble\, a. [CF. F. inflammable.]
Capable of being easily set fire; easily enkindled; combustible; as, inflammable oils or spirits.
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Excitable; irritable; irascible; easily provoked; as, an inflammable temper.
Inflammable air, the old chemical name for hydrogen.
Wiktionary
inflammable air
n. (context obsolete chemistry English) hydrogen
Usage examples of "inflammable air".
There had then elapsed between these two epochs an interval of near 300 years, during which the excavations, choked up with ruins, must have become full of inflammable air.
But they are filling it at the foundry - they use iron filings and vitriol to make the inflammable air, you know - and you can see it from the tower.