#1 K n. [kelvin] the basic unit of thermodynamic temperature adopted under the Systeme International d'Unites. wn
#2 K s. [thousand, one thousand, 1000, m, k] denoting a quantity consisting of 1,000 items or units. wn
#3 K n. [potassium, atomic number 19] a light soft silver-white metallic element of the alkali metal group; oxidizes rapidly in air and reacts violently with water; is abundant in nature in combined forms occurring in sea water and in carnallite and kainite and sylvite. wn
#4 K n. [thousand, one thousand, 1000, M, chiliad, G, grand, thou, yard] the cardinal number that is the product of 10 and 100. wn
#5 K n. [kilobyte, KB, kB] a unit of information equal to 1000 bytes. wn
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