English

hemihydrochloride

From hemi- + hydrochloride.

Proto-Indo-European *sem- ‘one, whole’

Proto-Indo-European *sēmi ‘half’

English hemi-

Today it means

noun Any compound that has one HCl group for each two amine groups

Language periods are conventional ranges, not dates for this word.

Etymograph / hemihydrochloride