is hydrochloride a compound
hyÂ·droÂ·chlorÂ·ide. A compound formed by the addition of a hydrochloric acid molecule to a basic moiety on the substance, for example, guanine hydrochloride, glycine hydrochloride. /hyÂ·droÂ·chloÂ·ride/ (-klorÂ´Ä«d) a salt of hydrochloric acid.