Mullion – A vertical bar between the panes of glass in a window
(Pronounced muh-lee-uhn)
To remember the definition of the word mullion, use the following mnemonic:
She became a multi-millionaire (mullion) selling the vertical bars between window panes.
Examples of mullion in a sentence
This mullion is made from aluminium.
The structure includes a mullion of over 2m tall.
The second storey window has a larger mullion than the ground floor.
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