Definition of psychochemical in English:

psychochemical

adjective

  • 1Of, relating to, or involving the chemistry of psychological processes.

  • 2Of, relating to, or designating a psychoactive substance, especially a drug.

noun

  • A psychoactive drug, especially one used as a chemical weapon.

Origin

Late 19th century; earliest use found in The Philosophical Review. From psycho- + chemical.

Pronunciation

psychochemical

/ˌsʌɪkəʊˈkɛmɪkl/