Silver nitrate, especially fused in the form of a stick.
More example sentences
- For a long time in the treatment of places to be cauterized, only the dreaded nitrate of lunar caustic was used to produce the caustic effect.
- At the time with which we are concerned lunar caustic was used as an astringent, in medicine and for cosmetic purposes, and for marking linen.
early 19th century: lunar in the sense 'containing silver'.
Definition of lunar caustic in:
- The British & World English dictionary