'Hydro-' definitions:
Definition of 'Hydro-'
From: GCIDE
- Hydro- \Hy"dro-\, Hydr- \Hy"dr-\
- 1. A combining form from Gr. ?, ?, water (see Hydra). [1913 Webster]
- 2. (Chem.) A combining form of hydrogen, indicating hydrogen as an ingredient, as hydrochloric; or a reduction product obtained by hydrogen, as hydroquinone. [1913 Webster]