SYNONYMS | WORD ORIGIN adjective constant; habitual; inveterate: a chronic liar. continuing a long time or recurring frequently: a chronic state of civil war. having long had a disease, habit, weakness, or the like: a chronic invalid. (of a disease) having long duration (opposed to acute).
chron·i·cal. Origin of chronic 1595–1605;
) time +
-ikos -ic Related forms chron·i·cal·ly, adverb chro·nic·i·ty , [kro- nis-i-tee] /krɒˈnɪs ɪ ti/ noun non·chron·ic, adjective non·chron·i·cal, adjective non·chron·i·cal·ly, adverb sub·chron·ic, adjective sub·chron·i·cal, adjective sub·chron·i·cal·ly, adverb un·chron·ic, adjective un·chron·i·cal·ly, adverb Can be confused acute chronic
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for sub-chronic adjective continuing for a long time; constantly recurring (of a disease) developing slowly, or of long duration Compare acute (def. 7) inveterate; habitual a chronic smoker informal very bad the play was chronic very serious he left her in a chronic condition Derived Forms chronically, adverb chronicity ( krɒˈnɪsɪtɪ), noun Word Origin for chronic
C15: from Latin
chronicus relating to time, from Greek khronikos, from khronos time
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Word Origin and History for sub-chronic adj.
early 15c., of diseases, "lasting a long time," from Middle French
chronique, from Latin chronicus, from Greek khronikos "of time, concerning time," from khronos "time" (see chrono-). Vague disapproving sense (from 17c.) is from association with diseases and later addictions.
Online Etymology Dictionary, © 2010 Douglas Harper
adj. Of long duration. Used of a disease of slow progress and long continuance.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Relating to an illness or medical condition that is characterized by long duration or frequent recurrence. Diabetes and hypertension are chronic diseases. Compare acute.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.