The Collaborative International Dictionary
hydromellonic acid
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.
Wiktionary
hydromellonic acid
n. (context chemistry English) hydromellone