Mental Process
dream Audio
dream [ dreem ]
Subclass of:
Imagination; Sleep
Definitions related to dreams:
  • Mental phenomenon occurring during sleep in which images, emotions, and thoughts are experienced with a sense of reality; occurs during REM sleep.
    CRISP Thesaurus
    National Institutes of Health, 2006
  • A series of thoughts, images, or emotions occurring during sleep which are dissociated from the usual stream of consciousness of the waking state.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2025
  • (dreaming) A mental phenomenon occurring during sleep in which images, emotions, and thoughts are experienced with a sense of reality; occurs during REM sleep.
    NCI
    U.S. National Cancer Institute, 2021
  • Dream, a hallucinatory experience that occurs during sleep. Dreaming, a common and distinctive phenomenon of sleep, has throughout human history given rise to myriad beliefs, fears, and conjectures, both imaginative and experimental, regarding its mysterious nature. While any effort toward...
    Encyclopedia Britannica
    Encyclopedia Britannica, Inc., 2025
Try this search on: Farlex, Merriam-Webster, Oxford Dictionary, or Wordnik

This content should not be used in place of medically-reviewed decision support reference material or professional medical advice. Some terms may have alternate or updated definitions not reflected in this set. The definitions on this page should not be considered complete or up to date.