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The kilogram, symbol kg, is the SI unit of mass. As of 2019 it is defined by taking the fixed numerical value of the Planck constant h to be 6.62607015×10−34 when expressed in the unit J⋅s, which is equal to kg⋅m2⋅s−1, where the meter and the second are defined in terms of c and ΔνCs.
Scientists have redefined the kilogram for 2019.
by American Patriot 2020 November 17, 2018
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Nov 27 Word of the Day
A stupid person; it refers to the lack of surface area on an individual's brain. The general thought is that the more surface area (wrinkles, creases, etc.) a brain has, the smarter the person is. Conversely, a person with a smooth brain (no wrinkles) has less surface area and would therefore be stupid.
That fucking smooth brain put his shirt on backwards again...

That smooth brain is dumber than a pile of shit.
by Tip Tank May 14, 2011
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European/SI measure of mass/weight roughly equal to two pounds, abbreviated as kg.
Me - Darnell is fat as fuck, dat mofo weighs 200 kilograms.
You - Wtf is a kilogram?
Me - A kilogram weighs 2.2 pounds.
You - Daaayum, that's 440 lbs!
by DynamiteDeuce April 08, 2014
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