psy·cho·tro·pic 
(sī′kə-trōpĭk, -trŏpĭk)
(sī′kə-trōpĭk, -trŏpĭk)adj.
Having an altering effect on perception, emotion, or behavior. Used especially of a drug.
n.
A psychotropic drug or other agent.
- subsolar
- subsonic
- subsp.
- subspecialist
- subspecialization
- subspecialize
- subspecialty
- subspecies
- subspecific
- subst.
- substage
- substance
- substance abuse
- substance abuser
- substance P
- substance use disorder
- substandard
- substantia gelatinosa
- substantial
- substantiality
- substantially
- substantialness
- substantia nigra
- substantiate
- substantiation