ion engine

noun

Definition of ion engine 

: a reaction engine deriving thrust from the ejection of a stream of ionized particles

Examples of ion engine in a Sentence

Recent Examples on the Web

Launched in 2007 with an ion engine, Dawn is nearing the end of its extended mission. Marcia Dunn, OrlandoSentinel.com, "NASA's Dawn spacecraft sending back close-ups of dwarf planet Ceres," 3 July 2018 Launched in 2007 with an ion engine, Dawn is nearing the end of its extended mission. Marcia Dunn, OrlandoSentinel.com, "NASA's Dawn spacecraft sending back close-ups of dwarf planet Ceres," 3 July 2018 Launched in 2007 with an ion engine, Dawn is nearing the end of its extended mission. Marcia Dunn, OrlandoSentinel.com, "NASA's Dawn spacecraft sending back close-ups of dwarf planet Ceres," 3 July 2018 Launched in 2007 with an ion engine, Dawn is nearing the end of its extended mission. Marcia Dunn, OrlandoSentinel.com, "NASA's Dawn spacecraft sending back close-ups of dwarf planet Ceres," 3 July 2018 Launched in 2007 with an ion engine, Dawn is nearing the end of its extended mission. Marcia Dunn, OrlandoSentinel.com, "NASA's Dawn spacecraft sending back close-ups of dwarf planet Ceres," 3 July 2018 Launched in 2007 with an ion engine, Dawn is nearing the end of its extended mission. Marcia Dunn, OrlandoSentinel.com, "NASA's Dawn spacecraft sending back close-ups of dwarf planet Ceres," 3 July 2018 Launched in 2007 with an ion engine, Dawn is nearing the end of its extended mission. Marcia Dunn, OrlandoSentinel.com, "NASA's Dawn spacecraft sending back close-ups of dwarf planet Ceres," 3 July 2018 Launched in 2007 with an ion engine, Dawn is nearing the end of its extended mission. Washington Post, "NASA spacecraft sending back close-ups of dwarf planet Ceres," 2 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'ion engine.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of ion engine

1958, in the meaning defined above

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Last Updated

7 Oct 2018

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The first known use of ion engine was in 1958

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More from Merriam-Webster on ion engine

Britannica.com: Encyclopedia article about ion engine

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