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A vertical member, as of stone or wood, dividing a window or other opening.
[Alteration of Middle English moniel, from Anglo-Norman moynel, perhaps from moienel, middle, from moien, from Latin mediānus, from medius; see medhyo- in Indo-European roots.]
mul′lioned (mŭl′yənd) adj.
1. (Architecture) a vertical member between the casements or panes of a window or the panels of a screen
2. (Physical Geography) one of the ribs on a rock face
(Architecture) (tr) to furnish (a window, screen, etc) with mullions
[C16: variant of Middle English munial, from Old French moinel, of unknown origin]
1. a vertical member, as of stone or wood, between the lights of a window, the panels in wainscoting, or the like.v.t.
2. to furnish with, or to form into divisions by the use of, mullions.
Past participle: mullioned
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|Noun||1.||mullion - a nonstructural vertical strip between the casements or panes of a window (or the panels of a screen)|
window - a framework of wood or metal that contains a glass windowpane and is built into a wall or roof to admit light or air