rational

Adjective

• having its source in or being guided by the intellect (as distinguished from experience or emotion)
  • a rational analysis
    

• capable of being expressed as a quotient of integers
  • rational numbers
    

• of or associated with or requiring the use of the mind
  • intellectual problems
    
  • the triumph of the rational over the animal side of man
    

• consistent with or based on or using reason
  • rational behavior
    
  • a process of rational inference
    
  • rational thought
    

Noun

• an integer or a fraction

Related words

• Synonyms: 
  intellectual , noetic , rational number