- capable of burning, corroding, or destroying living tissue.
- severely critical or sarcastic: a caustic remark.
- a caustic substance.
- Optics.
- capable of burning or corroding by chemical action
- sarcastic; cutting
- of, relating to, or denoting light that is reflected or refracted by a curved surface
- a surface that envelops the light rays reflected or refracted by a curved surface
- a curve formed by the intersection of a caustic surface with a plane
- a caustic substance, esp an alkali
