a nonstructural vertical strip between the casements or panes of a window (or the panels of a screen)
A vertical bar between the panes of glass or casements of a window or the panels of a screen.
a slender bar or pier which forms the division between the lights of windows, screens, etc
an upright member of a framing. See Stile
to furnish with mullions; to divide by mullions
Origin: [A corruption of munnion, F. moignon stump of an amputated limb, stump, OF. moing mutilated; cf. Armor. mo, mou, mank, monk, and also L. mancus maimed.]
A mullion is a vertical element that forms a division between units of a window, door, or screen, or is used decoratively. When dividing adjacent window units, its primary purpose is to provide structural support to an arch or lintel above the window opening. Its secondary purpose may be as a rigid support to the glazing of the window. When used to support glazing, they are teamed with horizontal supporting elements called "transoms". In the commercial door industry, the term is also applied to a piece of hardware that divides the opening of a pair of doors.
The numerical value of mullion in Chaldean Numerology is: 2
The numerical value of mullion in Pythagorean Numerology is: 6
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