mm meaning

Definition of mm

1. a metric unit of length equal to one thousandth of a meter

   Synonyms: millimeter, millimetre

   Type of: metric linear unit

mm in a sentence

• Cut the mozzarella into cubes approximately 7mm in size.
• He reached into his backpack and pulled out a 9mm pistol.
• This tropical region receives an average annual rainfall of 1800mm.
• Are the operating switch and the emergency switch at least 48 mm apart?

How to pronounce mm

mm is pronounced /m/ in British English and /m/ in American English.