Etymology

mullion

M3U1L1L1I1O1N1

Today it means: A vertical bar between the panes of glass or casements of a window or the panels of a screen. Full definition →

Middle English moyniel ← Old French moinel
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The story

  1. Old French · derived frommoinel
  2. Middle English · inherited frommoyniel
  3. English todaymullion

Alteration of monial (“mullion”), or metathesis of Middle English moyniel, both ultimately from Old French moinel.

Words from the same roots

Old Frenchmoinel all →

monial

Etymology from Wiktionary, CC BY-SA 4.0.