English
hydrogenous
From hydrogen + -ous.
A compound of hydrogen + -ous
Proto-Indo-European *ǵenh₁- ‘to produce’
Proto-Indo-European *ǵénh₁os ‘race, lineage’
Proto-Hellenic *génos ‘race’
Ancient Greek γένος ‘race, stock, kin’
French hydrogène
English hydrogen
Today it means
adj of, related to, or containing hydrogen
Language periods are conventional ranges, not dates for this word.
Etymograph / hydrogenous