Source : Webster's Revised Unabridged Dictionary (1913)

Indication \In`di*ca"tion\, n. [L. indicatio: cf. F.
   indication.]
   1. Act of pointing out or indicating.

   2. That which serves to indicate or point out; mark; token;
      sign; symptom; evidence.

            The frequent stops they make in the most convenient
            places are plain indications of their weariness.
                                                  --Addison.

   3. Discovery made; information. --Bentley.

   4. Explanation; display. [Obs.] --Bacon.

   5. (Med.) Any symptom or occurrence in a disease, which
      serves to direct to suitable remedies.

   Syn: Proof; demonstration; sign; token; mark; evidence;
        signal.

Source : WordNet®

indication
     n 1: something that serves to indicate or suggest; "an indication
          of foul play"; "indications of strain"; "symptoms are
          the prime indicants of disease" [syn: {indicant}]
     2: the act of indicating or pointing out by name [syn: {denotation}]
     3: (medicine) a reason to prescribe a drug or perform a
        procedure; "the presence of bacterial infection was an
        indication for the use of antibiotics" [ant: {contraindication}]
     4: something (as a course of action) that is indicated as
        expedient or necessary; "there were indications that it
        was time to leave"
     5: a datum about some physical state that is presented to a
        user by a meter or similar instrument; "he could not
        believe the meter reading"; "the barometer gave clear
        indications of an approaching storm" [syn: {reading}, {meter
        reading}]