CHRONIC

chronic|chronical. Chronic, or Chronical, [ch as k] a. continued a long time

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Chron″ic (?), a. [[L. chronicus, Gr. � concerning time, from � time: cf. F. chronique.]] 1. 1. Relating to time; according to time.
2. 2. Continuing for a long time; lingering; habitual.
Chronic disease, one which is inveterate, of long continuance, or progresses slowly, in distinction from an acute disease, which speedly terminates.