Found 2 items, similar to lunar caustic.
English → English (WordNet) Definition: lunar caustic lunar caustic n : silver nitrate fused into sticks and formerly used as a caustic
English → English (gcide) Definition: lunar caustic Nitrate \Ni"trate\, n. [Cf. F. nitrate.] (Chem.) A salt of nitric acid. [1913 Webster] Nitrate of silver, a white crystalline salt (AgNO3), used in photography and as a cauterizing agent; -- called also lunar caustic, and more commonly called silver nitrate . [1913 Webster +PJC]