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Definition of Truth serum
1. Noun. An intravenous anesthetic drug that has a hypnotic effect; induces relaxation and weakens inhibitions; is believed to induce people to talk freely.
Exact synonyms: Truth Drug
Specialized synonyms: Amobarbital, Pentothal, Thiopental, Thiopental Sodium, Thiopentobarbital Sodium
Generic synonyms: Intravenous Anesthetic
Specialized synonyms: Amobarbital, Pentothal, Thiopental, Thiopental Sodium, Thiopentobarbital Sodium
Generic synonyms: Intravenous Anesthetic
Medical Definition of Truth serum
1. Colloquialism for a drug, such as amobarbital sodium or thiopental sodium, intravenously injected for the purpose of eliciting information from the subject under its influence; a misnomer because the subject's revelations may or may not be factually true, and its legal status and use is questionable. (05 Mar 2000)