psy·chot·o·mi·met·ic 
(sī-kŏt′ō-mə-mĕtĭk, -mī-)
(sī-kŏt′ō-mə-mĕtĭk, -mī-)adj.
Tending to induce hallucinations, delusions, or other symptoms of a psychosis. Used of a drug.
n.
A psychotomimetic drug, such as LSD.
[Alteration of psychosomimetic (influenced by PSYCHOTIC) : PSYCHOS(IS) + MIMETIC.]
psy·chot′o·mi·meti·cal·ly adv.