mullion

[ muhl-yuh n ]
/ ˈmʌl yən /
Architecture

noun

a vertical member, as of stone or wood, between the lights of a window, the panels in wainscoting, or the like.
one of the radiating bars of a rose window or the like.

verb (used with object)

to furnish with, or to form into divisions by the use of, mullions.

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Origin of mullion

First recorded in 1560–70; metathetic variant of monial

OTHER WORDS FROM mullion

un·mul·lioned, adjective

Words nearby mullion

mulligan, mulligatawny, mulligrubs, mulliken, mullingar, mullion, mullis, mullite, mullock, mulloway, mulroney
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for mullions

British Dictionary definitions for mullions

mullion
/ (ˈmʌlɪən) /

noun

a vertical member between the casements or panes of a window or the panels of a screen
one of the ribs on a rock face

verb

(tr) to furnish (a window, screen, etc) with mullions

Word Origin for mullion

C16: variant of Middle English munial, from Old French moinel, of unknown origin
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012