mullion

play
noun mul·lion \ˈməl-yən\

Definition of mullion

  1. :  a slender vertical member that forms a division between units of a window, door, or screen or is used decoratively

mullion

transitive verb

Recent Examples of mullion from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'mullion'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of mullion

probably alteration of monial mullion


First Known Use: 1567


MULLION Defined for English Language Learners

mullion

play
noun

Definition of mullion for English Language Learners

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


Learn More about mullion


Seen and Heard

What made you want to look up mullion? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

the point at which something begins

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

  • istock-refers-to-this-as-a-tumble-of-strawberries-which-sounded-pretty-nice-to-us
  • Which is a synonym of garner?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!