Medical Dictionary

imagination

noun imag·i·na·tion \im-ˌaj-ə-ˈnā-shən\

Medical Definition of IMAGINATION

:  an act or process of forming a conscious idea or mental image of something never before wholly perceived in reality by the one forming the images (as through a synthesis of remembered elements of previous sensory experiences or ideas as modified by unconscious defense mechanisms); also :  the ability or gift of forming such conscious ideas or mental images especially for the purposes of artistic or intellectual creation

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