#1 M n. [meter, metre, m] the basic unit of length adopted under the Systeme International d'Unites (approximately 1.094 yards). wn
#2 M n. [molarity, molar concentration] concentration measured by the number of moles of solute per liter of solution. wn
#3 M s. [thousand, one thousand, 1000, m, k] denoting a quantity consisting of 1,000 items or units. wn
#4 M n. [thousand, one thousand, 1000, K, chiliad, G, grand, thou, yard] the cardinal number that is the product of 10 and 100. wn
#5 M n. [megabyte, MB] a unit of information equal to 1000 kilobytes or 10^6 (1,000,000) bytes. wn
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