Origin: 1480–90; v. use of phrase in ure, en ure in use, customary < AF en ure in use, at work, equiv. to enin+ ure < L opera, pl. of opus work; cf. F oeuvre
in·ure also en·ure (ĭn-yŏŏr') tr.v.
in·ured also en·ured, in·ur·ing also en·ur·ing, in·ures also en·ures To habituate to something undesirable, especially by prolonged subjection; accustom: "Though the food became no more palatable, he soon became sufficiently inured to it"(John Barth).
[Middle English, back-formation from enured, customary, from in ure : in, in; see in1 + ure, use (from Old French euvre, uevre, work, from Latin opera, activity associated with work; see op- in Indo-European roots).] in·ure'ment n.
Main Entry: in·ure Pronunciation: i-'nur, -'nyur Function: intransitive verb Inflected Forms: in·ured; in·ur·ing : to become of advantage —usually used in the phrase inure to the benefit of