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1 definition found

From: Webster's Revised Unabridged Dictionary (1913)

 Hy·dro- Hy·dr-.
 1. A combining form from Gr. ░, ░, water (see Hydra).
 2. Chem. A combining form of hydrogen, indicating hydrogen as an ingredient, as hydrochloric; or a reduction product obtained by hydrogen, as hydroquinone.
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