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Firm establishment by long continuance; firmness or deep-rooted obstinacy of any quality or state acquired by time; as, the inveteracy of custom, habit, or disease; - usually in a bad sense; as, the inveteracy of prejudice or of error.

Firm establishment by long continuance; firmness or deep-rooted obstinacy of any quality or state acquired by time; as, the inveteracy of custom, habit, or disease; - usually in a bad sense; as, the inveteracy of prejudice or of error.

n. Long continuance, or the firmness or deep-root obstinacy of any quality or state acquired by time.

Long continuance of any thing bad; in physick, long continuance of a disease.