- H2N2Os2O5
- Osmiamic Os`mi*am"ic, a. [Osmium + amido.] (Chem.) Of, pertaining to, or designating, a nitrogenous acid of osmium, {H2N2Os2O5}, forming a well-known series of yellow salts. [1913 Webster]
The Collaborative International Dictionary of English. 2000.