Source : Webster's Revised Unabridged Dictionary (1913)

Acritical \A*crit"ic*al\, a. [Gr. 'a priv. + ? critical.] (Med.)
   Having no crisis; giving no indications of a crisis; as,
   acritical symptoms, an acritical abscess.

Source : WordNet®

acritical
     adj : without a crisis (as of some diseases)