Definify.com
Webster 1913 Edition
Chronic
Chron′ic
,Adj.
[L.
chronicus
, Gr. [GREEK] concerning time, from [GREEK] time: cf. F. chronique
.] 1.
Relating to time; according to time.
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.