Definition of muntin in US English:



  • A bar or rigid supporting strip between adjacent panes of glass.

    • ‘The front door is surmounted by an elliptical recessed arch in which a glass with five vertical muntins has replaced the original wooden fan.’
    • ‘Through much of the eighteenth century, muntins, the thin bars that divide panes of glass in a window sash, were relatively shallow in proportion to their depth.’
    • ‘Bookcase doors could be paneled or have glass panes set between muntins.’
    • ‘For some reason, people who wouldn't dream of ripping the wood windows out of a Victorian house think nothing of scrapping their postwar home's aluminum windows and substituting clunky white vinyl ones with fake muntins.’
    • ‘We're assuming that your sash, stops, lites and muntins have seen better days.’
    • ‘As a result, the sash bars or muntins were reduced to around 3/4 inch in width and at the same time made deeper, so as not to sacrifice strength.’
    • ‘The putty at the front is then reinstalled and trimmed to match the top of the muntins inside.’
    • ‘The window frames and muntins had been replaced, so we had no early paint history.’
    • ‘Despite the thickness of the walls, the house has an open and airy feeling, due in no small part to the tall, aluminum-framed windows and French doors, with delicate horizontal muntins.’
    • ‘Glass doors on adjacent cabinets feature a muntin grid similar to those on the window sashes.’
    • ‘The muntins are sandwiched between the double glazing so that the windows collect less dust and are easier to clean.’
    • ‘Many new windows can be pivoted to allow cleaning from the inside; snap-out muntin bars reduce the time required for cleaning.’


Early 17th century: variant of obsolete montant (from French, literally ‘rising’).