📖 WordNook

rational

adjective
  1. having its source in or being guided by the intellect (as distinguished from experience or emotion)
    “a rational analysis”
  2. of or associated with or requiring the use of the mind
    intellectualnoetic
  3. consistent with or based on or using reason
    “rational behavior”
  4. capable of being expressed as a quotient of integers
    “rational numbers”
noun
  1. an integer or a fraction
    rational number