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kilogram

noun

ki·​lo·​gram ˈki-lə-ˌgram How to pronounce kilogram (audio) ˈkē-lə- How to pronounce kilogram (audio)
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

Did you know?

The original concept of the kilogram, as the mass of a cubic decimeter of water (a bit more than a quart), was adopted as the base unit of mass by the new revolutionary government of France in 1793. In 1875, in the Treaty of the Meter, 17 countries, including the U.S., adopted the French kilogram as an international standard. In 1889 a new international standard for the kilogram, a metal bar made of platinum iridium, was agreed to; President Benjamin Harrison officially received the 1-kilogram cylinder for the U.S. in 1890. But no one uses that bar very often; for all practical purposes, a kilogram equals 2.2 pounds.

Example Sentences

Recent Examples on the Web On the production side, some of the Inflation Reduction Act's offerings include a new 10-year production tax credit for clean hydrogen under section 45V, which offers a credit of up to $3 per kilogram of clean hydrogen. Nana Ama Sarfo, Forbes, 25 Aug. 2022 Depending on your level of physical activity, most healthy adults should aim for about 0.8 - 1.3 grams of protein per kilogram of body weight. Good Housekeeping, 16 Aug. 2022 Compared to legal agricultural products like fruit and vegetables, marijuana and coca leaves don't spoil for days and sell at a higher price per kilogram. Stefano Pozzebon, CNN, 21 Aug. 2022 President Joe Biden is poised to sign the Inflation Reduction Act, which contains a landmark climate initiative that offers $3 per kilogram in tax credits for green hydrogen production. Bymarcus Baram, Fortune, 15 Aug. 2022 The rare-earth materials needed can cost hundreds of dollars per kilogram. Margaret Osborne, Smithsonian Magazine, 11 Aug. 2022 Retail prices peaked at 60 rupees per kilogram this year. Mimansa Verma, Quartz, 11 July 2022 The Biden administration aims to reduce the price of clean hydrogen to $1 for 1 kilogram in one decade — up from $5 or more — and U.S. utility Florida Power & Light plans to invest $65 million in the construction of a 20 MW electrolyzer. Christiaan Hetzner, Fortune, 19 Jan. 2022 According to Statista, the average price of coffee beans in Saudi Arabia also jumped from 28.6 riyals per kilogram in 2011 to 38.9 in 2020. Hadas Gold And Abeer Salman, CNN, 30 May 2022 See More

Word History

Etymology

French kilogramme, from kilo- + gramme gram

First Known Use

1797, in the meaning defined at sense 1

Time Traveler
The first known use of kilogram was in 1797

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