ionization

noun

ion·​i·​za·​tion ˌī-ə-nə-ˈzā-shən How to pronounce ionization (audio)
plural ionizations
1
: the act or process of ionizing something : conversion of a substance into ions
Then other photons, collisions or an electric field cause ionization of the excited neutral species.G. Samuel Hurst and Vladilen S. Letokhov
2
: the state of being ionized
While the light flashes themselves are not harmful, the tissue ionization caused by the intruding particle near the end of its track is indeed deadly to some affected cells.James D. Burke

Examples of ionization in a Sentence

Recent Examples on the Web
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Stellar radiation and ionization also directly impact the temperature of the disk, affecting how the dust and gas move. Nola Taylor Tillman, Space.com, 17 Feb. 2025 Absorbing an abundance of lower-energy photons won't do the trick for ionization. Robert Lea, Space.com, 12 Feb. 2025 The ionization process produces a cloud of ions and electrons. Keith Cooper, Space.com, 25 Jan. 2025 The light from young energetic stars is slowly transforming the cold gas into hot gas, revealing the advancing boundary between both, known as the ionization front. Miguel Claro, Space.com, 22 Jan. 2025 See All Example Sentences for ionization

Word History

Etymology

ion + -ization

First Known Use

1891, in the meaning defined at sense 1

Time Traveler
The first known use of ionization was in 1891

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Cite this Entry

“Ionization.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ionization. Accessed 12 Mar. 2025.

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