Definitions:

1. Refers to a size that is extra-large, typically used in clothing and other products. ADJECTIVE
   • In clothing, XL typically indicates and extra-large size.
   • The XL model of the phone boasted a larger screen and a longer battery life.
2. Roman numeral for the number 40, commonly used in event numbering, and formal or historical references. ADJECTIVE
   • The ancient Roman coin has the numeral XL, indicating its value of forty units.

Synonyms:

• 40
• big
• extra large
• forty