intellectual

/ˌin-tə-ˈlek-chə-wəl/

adjective

  1. of or relating to the intellect or its use

  2. developed or chiefly guided by the intellect rather than by emotion or experience : rational

  3. requiring use of the intellect

noun

  1. an intellectual person

  2. intellectual powers

noun

  1. mild to severe impairment in intellectual ability equivalent to an IQ of 70 to 75 or below that is accompanied by significant limitations in social, practical, and conceptual skills (as in interpersonal communication, reasoning, or self-care) necessary for independent daily functioning and that has an onset before age 18