- Mental activity during sleep in which events, thought, emotions, and images are experienced as real.- wet d. a true physiologic orgasm during sleep including, in males, a nocturnal seminal emission usually accompanying a d. with sexual content.
* * *dream 'drēm n, often attrib a series of thoughts, images, or emotions occurring during sleep and esp. during REM sleep compare DAYDREAM1) to have a dream2) to indulge in daydreams or fantasies vt to have a dream ofdream·er 'drē-mər n
* * *(drēm) 1. a mental phenomenon occurring during sleep in which images, emotions, and thoughts are experienced with a sense of reality. Dreaming occurs during REM sleep; typically there are four or five such periods a night having a total duration of about 90 minutes. Freud originated psychological interpretation of dreams, theorizing that dreams enable the conscious expression of repressed unconscious impulses and wishes. 2. to experience such a phenomenon.
Medical dictionary. 2011.