Adjective m has 1 sense
  1. thousand, a thousand, one thousand, 1000, m, k - denoting a quantity consisting of 1,000 items or units
    Antonym: ordinal (indirect, via cardinal)
,Noun m has 4 senses
  1. meter, metre, m - the basic unit of length adopted under the Systeme International d'Unites (approximately 1.094 yards)
    --1 is a kind of metric linear unit
    --1 is a part of
     decameter, dekameter, decametre, dekametre, dam, dkm
    --1 has parts: decimeter, decimetre, dm
  2. molarity, molar concentration, M - concentration measured by the number of moles of solute per liter of solvent
    --2 is a kind of concentration
  3. thousand, one thousand, 1000, M, K, chiliad, G, grand, thou, yard - the cardinal number that is the product of 10 and 100
    --3 is a kind of large integer
  4. M - the 13th letter of the Roman alphabet
    --4 is a kind of
    letter, letter of the alphabet, alphabetic character
    --4 is a member of Roman alphabet, Latin alphabet
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