from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Of or pertaining to hypophosphoric acid or its derivatives
from the GNU version of the Collaborative International Dictionary of English
- adj. Pertaining to, or derived from, or containing, phosphorus in a lower state of oxidation than in phosphoric compounds.
from The Century Dictionary and Cyclopedia
- Same as hypophosphorous.
- Noting an acid, a distinct tetra basic acid, H4P2O6, produced, along with phosphorous and phosphoric acids, by the slow oxidation of phosphorus in moist air at ordinary temperatures.
From hypo- + phosphoric (Wiktionary)