An injury or wrong. / (law) A wrongful act, whether intentional or negligent, which causes an injury and can be remedied in civil court, usually through the awarding of damages.

(mathematics) The underlying set of mathematical structures such as posets and matroids.

(surgery) Cautery by means of a knife or needle heated by a galvanic current.

(organic chemistry) An organic compound related to choline, with the difference that the terminal carboxylic acid group of trimethylglycine has been reduced to a hydroxyl group in choline.