caustic

Capable of burning, corroding or destroying organic tissue.

Sharp, bitter, cutting, biting, and sarcastic in a scathing way.usually

• "How now!" said Scrooge, caustic and cold as ever.
• The bargain was not concluded as easily as might have been expected though, for Scadder was caustic and ill-humoured, and cast much unnecessary opposition in the way

Any substance or means which, applied to animal or other organic tissue, burns, corrodes, or destroys it by chemical action; an escharotic.countableuncountable

• The association of the heavenly bodies with known metals and also with human organs and destinies goes back to ancient Chaldea, the land of astrologers. In Chaucer’s words: ‘The seven bodies eek, lo hear anon. Sol gold is, and Luna silver w

The envelope of reflected or refracted rays of light for a given surface or object.countableuncountable

The envelope of reflected or refracted rays for a given curve.countableuncountable

Caustic soda.informaluncountable