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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Breaking structural norms To make the measurement, the team used ISOLDE’s collinear resonance ionization spectroscopy (CRIS) apparatus, which is one of the few instruments in the world capable of resolving fine details in neutron-rich nuclei. Georgina Jedikovska, Interesting Engineering, 3 Sep. 2025 This novel scenario, of flash ionization in the early Universe, may turn out to be, like most new theoretical ideas, a red herring that only takes us to a possible world that never was. Ethan Siegel, Big Think, 2 Sep. 2025 In particular, the ionization of neon causes the release of infrared radiation at a very specific wavelength. Robert Lea, Space.com, 29 July 2025 The findings, published in ACS Environmental Au, came during a month-long field campaign in Oklahoma by researchers from the University of Colorado Boulder, who used a high-resolution chemical ionization mass spectrometer designed to study how aerosol particles form in the atmosphere. Thomas Westerholm, MSNBC Newsweek, 20 June 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 8 Sep. 2025.

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