psychochemicaladj.n.

1899 Philos. Rev. 8 117 When now it is maintained that space is an empirical notion, it is not necessarily implied that the perceptional experience from which it is abstracted is itself a psycho-chemical product of non-spatial sensations.

1912 Amer. Jrnl. Psychol. 23 591 An attempt to analyze life from a purely psycho-chemical viewpoint.

1972 G. Watson (title) Nutrition and your mind: the psychochemical response.

2002 H. J. Kristal & J. M. Haig Nutrition Solution i. 19 His biochemical research..focused on the role of oxidation in defining metabolic individuality, particuarly as it is related to psychochemical states and personality disorders.

1958 M. Jarvik in H. H. Pennes Psychopharmacology ix. 204 They have been called psychoso- or psychotomimetic, psychotherapeutic, tranquilizing, ataraxic,..or, as a general class, psychochemical, neurotropic,..and a number of other names.

1977 Rolling Stone 21 Apr. 46/4 The Soviet Union was hard at work in psychochemical research.

1989 D. Hill Fraxilly Fracas (BNC) 100 I pushed past a knot of overdressed pubescent girls, each with a scarred upper lip that carried a smear of coloured grease. It was called Frag, and it would be giving off enough psychochemical fragrance into their nostrils to keep their minds dislocated for a week.

1958 Washington Post & Times Herald 10 May 1/7 Military chemists would like to be able to develop what he called ‘psycho-chemicals’ that would cause irrational behavior among potential enemies.

1965 B. Inglis Drugs, Doctors & Disease iii. 110 Nowhere has the evidence of the power of placebo effect been more striking than in the new market for psycho-chemicals: pep pills and tranquillisers.

1996 City Paper (Baltimore) 24 Apr. 23/1 Edgewood's own chemists began experimenting with other types of chemical weapons, including LSD and other psychochemicals intended to disable rather than kill an enemy.