Definitions

1. noun

A Roman numeral for the number 40 or a prefix meaning extra-large or extra long.

“The store offered XL sizes for oversized clothing.”

2. adverb

Used to indicate that something is extra large or extra long.

“I ordered an XL pizza with extra cheese.”

3. prefix

Used to form words indicating something is extra large or extra long.

“XL shoes are perfect for people with large feet.”