A compound formed by the addition of a hydrochloric acid molecule to a basic moiety on the substance; e.g., guanine h., glycine h..
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hy·dro·chlo·ride -'klō(ə)r-.īd, -'klȯ(ə)r- n a salt of hydrochloric acid with an organic base used esp. as a vehicle for the administration of a drug
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hy·dro·chlo·ride (hi″dro-klorґīd) a salt formed by addition of hydrochloric acid; chemically it is a chloride salt of the moiety formed by protonation of a neutral organic compound. The term hydrochloride is used primarily in drug names.Medical dictionary. 2011.