† ˈcyanous, a. Chem. Obs.
[f. cyan- 2 + -ous: = F. cyaneux.]
In cyanous acid, ‘the name originally given by Serullas to cyanic acid, on the supposition that it contained only half as much oxygen as the acid then called cyanic, but now cyanuric acid’ (Watts Dict. Chem. II. 286).
| 1832 [see cyanic 1]. |