Dictionary

truth serum

noun

Definition of TRUTH SERUM

:  a hypnotic or anesthetic held to induce a subject under questioning to talk freely

First Known Use of TRUTH SERUM

1924

Rhymes with TRUTH SERUM

Medical Dictionary

truth serum

noun

Medical Definition of TRUTH SERUM

:  a hypnotic or anesthetic (as thiopental) held to induce a subject under questioning to talk freely

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