| psycho | the branch of psychology that is concerned with the physiological bases of psychological processes |
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| psycho | a conductor of souls to the afterworld |
| psycho | epiphytic orchids of Central and South America formerly included in genus Oncidium |
| psycho | orchid of South and Central America having flowers similar to but smaller than Psychopsis papilio |
| psycho | orchid of South America and Trinidad having large yellow and reddish-brown flowers |
| psycho | of or relating to the mental or emotional attitudes about sexuality |
| psycho | (psychoanalysis) the process during which personality and sexual behavior mature through a series of stages: first oral stage and then anal stage and then phallic stage and then latency stage and finally genital stage |
| psycho | the mental representation of sexual activities |
| psycho | any severe mental disorder in which contact with reality is lost or highly distorted |
| psycho | used of illness or symptoms resulting from neurosis |
| psycho | a mental disorder that causes somatic symptoms |
| psycho | brain surgery on human patients intended to relieve severe and otherwise intractable mental or behavioral problems |