ion·​i·​za·​tion ˌī-ə-nə-ˈzā-shən How to pronounce ionization (audio)
plural ionizations
: 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
: 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 The flare’s aftermath is thought to have lasted throughout the first transit, so the ionization was likely still going on as Hubble watched. Elizabeth Rayne, Ars Technica, 15 Aug. 2023 In turn, this ionization weakened radio waves coursing through the atmosphere. Tom Yulsman, Discover Magazine, 20 Dec. 2023 These include protecting from ionization of the air around conductors (the corona effect), providing a moisture barrier, shielding from electromagnetic interference, promoting thermal conductivity, and providing mechanical strength and durability. Amy Jankovsky, IEEE Spectrum, 30 Nov. 2023 This monitor pulls double duty, able to sense carbon monoxide (with an electrochemical sensor) and smoke (with an ionization sensor). Quincy Bulin, Better Homes & Gardens, 11 Aug. 2023 Air Ionizing: Through the process of air ionization, AirSure helps to neutralize and eliminate airborne bacteria, viruses, and other pathogens, further enhancing the purity of the air the wearer breathes. Jon Stojan, USA TODAY, 4 Aug. 2023 The Waters is a chlorine-free space that promotes relaxation and healing by using ionization and natural mineral ions, including copper, silver, zinc, aluminum, and gold. ELLE, 14 Apr. 2023 Sensor Type There are two main types of sensor: ionization and photoelectric. Nor'adila Hepburn, Better Homes & Gardens, 1 May 2023 The district, however, has begun installing bipolar ionization devices and expects to be done within the next several months, Rose said. oregonlive, 28 Aug. 2021 See More

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

Word History


ion + -ization

First Known Use

1891, in the meaning defined at sense 1

Time Traveler
The first known use of ionization was in 1891

Dictionary Entries Near ionization

Cite this Entry

“Ionization.” Dictionary, Merriam-Webster, Accessed 21 Feb. 2024.

Last Updated: - Updated example sentences
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