ki·​lo·​joule ˈki-lə-ˌjül How to pronounce kilojoule (audio)
: 1000 joules
also : a unit in nutrition equivalent to 0.239 calorie

Examples of kilojoule in a Sentence

Recent Examples on the Web Their 28 kilojoule laser system, the team noted, can at least yield more fusion energy than what is contained in the central plasma—an accomplishment that’s on the road toward NIF’s success, but still a distance away. IEEE Spectrum, 6 Feb. 2024 But shots in the first 3 years of the ignition campaign only yielded about 1 kilojoule (kJ) of energy each, short of the 21 kJ pumped into the capsule by the x-ray pulse and far short of the 1.8 megajoules (MJ) in the original laser pulse. Daniel Clery, Science | AAAS, 23 Nov. 2020 The dose of 1 kilojoule per square meter, which killed bacteria and roundworms after just 5 minutes, was lethal to Hypsibius exemplaris tardigrades at 15 minutes; most died after 24 hours. Lakshmi Supriya, Science | AAAS, 13 Oct. 2020 The energy content varies from 80 kilojoules (kJs) to 150 kJs per 100ml compared to zero for water. Alexandra Hansen, Quartzy, 5 Nov. 2019 These include coconut cream, sugar, other fruit juices, vitamin C, and added flavors which add to its kilojoule content. Alexandra Hansen, Quartzy, 5 Nov. 2019 As befits a fellow whose characters rarely can work up the kilojoules needed to produce an emphatic shrug, though, Jarmusch has remained a recessive figure in the culture. Kyle Smith, National Review, 11 June 2019 One such rider posted his stats on Instagram: 17.49 miles biked, 960 calories burned, 699 kilojoules of total ride output. Cheryl Wischhover, Vox, 14 Nov. 2018 On Wednesday, Jackman scored his personal best on the Peloton-- 699 kilojoules output and 960 calories burned! Joey Morona,, 1 Mar. 2018

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'kilojoule.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


International Scientific Vocabulary

First Known Use

circa 1889, in the meaning defined above

Time Traveler
The first known use of kilojoule was circa 1889

Dictionary Entries Near kilojoule

Cite this Entry

“Kilojoule.” Dictionary, Merriam-Webster, Accessed 13 Jun. 2024.

Kids Definition


: 1000 joules

Medical Definition


ki·​lo·​joule ˈkil-ə-ˌjü(ə)l How to pronounce kilojoule (audio)
: 1000 joules
also : a unit equivalent to 0.239 nutritional calories

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