Caustic

Caustic most commonly refers to:


 * Causticity, the property of being able to corrode organic tissue
 * Sodium hydroxide, sometimes called caustic soda
 * Potassium hydroxide, sometimes called caustic potash
 * Calcium oxide, sometimes called caustic lime

Caustic may also refer to:


 * Caustic (band), an American industrial/powernoise band
 * Caustic (mathematics), the envelope of rays reflected or refracted by a manifold
 * Caustic (optics), optic phenomenon due to light rays reflecting/refracting through curved surfaces/objects
 * Caustic Graphics, a graphics technology developer, part of Imagination Technologies
 * Caustic Window, an alias of Aphex Twin (electronic musician Richard D. James)
 * A playable character in the battle royale game Apex Legends