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Noun: ket
  1. [informal] A general anaesthetic and tranquilizer (not a barbiturate) that is administered intravenously or intramuscularly; used mainly by veterinarians or for minor surgery with geriatric or paediatric patients; taken in large doses it causes hallucinations similar to those associated with the use of PCP
    "The veterinarian administered ket to sedate the injured horse";
    - ketamine, ketamine hydrochloride, Ketalar
     
  2. (quantum mechanics) a vector in a complex Hilbert space, represented by the right half of Dirac's bra-ket notation |⟩
    "The ket |ψ⟩ represents the state of the quantum system"
     
  3. [archaic, dialect] Carrion; any filth

Derived forms: kets

Type of: club drug, general anaesthetic [Brit, Cdn], general anesthetic [N. Amer]

Encyclopedia: Ket