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The Britannica Dictionary

mullion

1 ENTRIES FOUND:

mullion (noun)

mullion /ˈmʌljən/ noun

plural mullions

mullion

/ˈmʌljən/

noun

plural mullions

Britannica Dictionary definition of MULLION

[count]

: an upright piece of wood, stone, metal, etc., that separates two windows

— mullioned

/ˈmʌljənd/ adjective

mullioned windows

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