Source : Webster's Revised Unabridged Dictionary (1913)

Medical \Med"ic*al\, a. [LL. medicalis, L. medicus belonging to
   healing, fr. mederi to heal; cf. Zend madha medical science,
   wisdom, gr. ? to learn, E. mind: cf. F. m['e]dical.]
   1. Of, pertaining to, or having to do with, the art of
      healing disease, or the science of medicine; as, the
      medical profession; medical services; a medical
      dictionary; medical jurisprudence.

   2. Containing medicine; used in medicine; medicinal; as, the
      medical properties of a plant.

Source : WordNet®

medical
     adj 1: relating to the study or practice of medicine; "the medical
            profession"; "a medical student"; "medical school"
     2: requiring or amenable to treatment by medicine especially as
        opposed to surgery; "medical treatment"; "pheumonia is a
        medical disease" [ant: {surgical}]
     3: of or belonging to Aesculapius or the healing art [syn: {aesculapian}]

medical
     n : a thorough physical examination; includes a variety of tests
         depending on the age and sex and health of the person
         [syn: {checkup}, {medical checkup}, {medical examination},
          {medical exam}, {health check}]