Wiktionary
n. (context obsolete chemistry English) An early term for hydrogen.
Usage examples of "hydrogen gas".
He bled hydrogen gas slowly through the valve, lowering the fuel's vapor pressure without letting fuel boil out the valve itself.
Radio observations show two enormous clouds of hydrogen gas, enough to make millions of suns, plummeting out from the galactic core, as if a mild explosion happened there every now and then.
From the simple hydrogen gas the next atom in complexity, helium, was formed.
He fell in the bag and the hydrogen gas suffocated him before he could be hauled out.
By the 1890s, Diesel-type engines (largely of aluminum-alloy construction and running on a mixture of kerosene and hydrogen gas from the lift cells) had become the standard engine for dirigible airships worldwide.
The balloons were brilliantly simple, little more than long narrow tubes of exquisitely thin yet tough Mylar inflated with hydrogen gas automatically when they reached the proper altitude to float across the landscape like improbable giant white cigarettes.
The smooth cylindrical shell contains only hydrogen gas under pressure and a core of uranium alloy.
Heller went out shopping after getting a couple addresses and he bought a huge tank of oxygen and a huge tank of hydrogen gas and had them delivered to the garage.
That was Eric's job, to regulate the tank's pressure by regulating the temperature of the hydrogen gas.