'Cyamellone' definitions:

Definition of 'Cyamellone'

From: GCIDE

Cyamellone \Cy*am"el*lone\ (s[-i]*[a^]m"[e^]l*l[=o]n), n. (Chem) A complex derivative of cyanogen, regarded as an acid, and known chiefly in its salts; -- called also {hydromellonic acid}. [1913 Webster]