English
halogenous
From halogen + -ous.
A compound of halogen + -ous
Proto-Indo-European *sḗh₂l ‘salt’
Proto-Hellenic *hā́ls ‘salt’
Ancient Greek ἅλς ‘salt" or "sea’
English halogen
Today it means
adj Of a compound: containing a halogen as part of the molecule.
Language periods are conventional ranges, not dates for this word.
Etymograph / halogenous