Mullion meaning

mŭlyən
Frequency:
A vertical member, as of stone or wood, dividing a window or other opening.
noun
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A slender, vertical dividing bar between the lights of windows, doors, etc.
noun
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To furnish with or divide by mullions.
verb
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1
A vertical bar between the panes of glass or casements of a window or the panels of a screen.
noun
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1
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Origin of mullion

  • Alteration of Middle English moniel from Anglo-Norman moynel perhaps from moienel middle from moien from Latin mediānus from medius medhyo- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • Corruption of munnion, French moignon (“stump of an amputated limb, stump").

    From Wiktionary