kilogram
noun
ki·lo·gram
ˈki-lə-ˌgram
ˈkē-lə-
1
: the base unit of mass in the International System of Units that is defined by setting the fixed numerical value of Planck's constant to 6.62607015 x 10–34 joule seconds see Metric System Table
2
: a unit of force or weight equal to the weight of a kilogram mass under a gravitational attraction equal to that of the earth
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Merriam-Webster unabridged
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