[hahy-druh-klawr-ahyd, -id, -klohr-]
a salt, especially of an alkaloid, formed by the direct union of hydrochloric acid with an organic base that makes the organic constituent more soluble.

1820–30; hydro-2 + chloride

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World English Dictionary
hydrochloride (ˌhaɪdrəˈklɔːraɪd)
a quaternary salt formed by the addition of hydrochloric acid to an organic base, such as aniline hydrochloride, [C6H5NH3]+Cl-

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American Heritage
Medical Dictionary

hydrochloride hy·dro·chlo·ride (hī'drə-klôr'īd')
A compound resulting from the reaction of hydrochloric acid with an organic base.

The American Heritage® Stedman's Medical Dictionary
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American Heritage
Science Dictionary
hydrochloride   (hī'drə-klôr'īd')  Pronunciation Key 
A salt containing the group HCl. Many important drugs are hydrochlorides.
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Example sentences
Glucosamine sulfate may be more effective than glucosamine hydrochloride.
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