nm. hydrogen, colorless odorless gas (lightest of the known elements)

adj. hydrogenous, containing hydrogen (Chemistry)

(n.) = hydrogen ; hydrogen gas.
Ex: The work of J Dewar, who liquefied hydrogen, is compared to that of H Kamerlingh Onnes, who liquefied helium = Se compara el trabajo de J. Dewar, que licuó el hidrógeno, con el de H. Kamerlingh Onnes, que licuó el helio.
Ex: Yes, there really was a smoking room on the Hindenburg, even though the zeppelin was inflated with 7 million cubic feet of hydrogen gas.
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* átomo de hidrógeno = hydrogen atom.
* bomba de hidrógeno = hydrogen bomb (H-bomb).
* isótopo de hidrógeno = hydrogen isotope.
* sulfuro de hidrógeno = hydrogen sulphide [hydrogen sulfide, -USA].