Hypo-

Name:
Hypo-
Detailed information:
(1) A prefix used in chemical terminology to indicate a compound (usually an acid) in its lowest oxidation state or containing the lowest proportion of oxygen in a series of compounds, e.g., nitric acid (HNO₃), nitrous acid (HNO₂), hyponitrous acid (H₂N₂O₂). (2) Common term for a photographic chemical.See Sodium Thiosulfate.