m meaning and definition

M noun

Definition of m (noun)

1. the basic unit of length adopted under the Systeme International d'Unites (approximately 1.094 yards)
   • synonyms: meter, metre
2. concentration measured by the number of moles of solute per liter of solution
   • synonyms: molar concentration, molarity
3. the cardinal number that is the product of 10 and 100
   • synonyms: 1000, chiliad, G, grand, K, one thousand, thou, thousand, yard
4. a unit of information equal to 1000 kilobytes or 10^6 (1,000,000) bytes
   • synonyms: MB, megabyte
5. a unit of information equal to 1024 kibibytes or 2^20 (1,048,576) bytes
   • synonyms: MB, mebibyte, megabyte, MiB
6. the 13th letter of the Roman alphabet
7. the 13th letter of the Roman alphabet

M adjective

Definition of m (adjective)

1. denoting a quantity consisting of 1,000 items or units
   • synonyms: 1000, k, one thousand, thousand