caustic
/ˈkɔstɪk/ noun C2- Any substance or means which, applied to animal or other organic tissue, burns, corrodes, or destroys it by chemical action; an escharotic.
- The envelope of reflected or refracted rays of light for a given surface or object.
- The envelope of reflected or refracted rays for a given curve.
- Caustic soda.
Plural caustics
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