ionize

verb

ion·​ize ˈī-ə-ˌnīz How to pronounce ionize (audio)
ionized; ionizing

transitive verb

: to convert wholly or partly into ions
ionizable adjective
ionizer noun

Examples of ionize in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Unlike X-rays, ultrasounds do not use ionizing radiation and are not associated with radiation exposure.6 In rare cases, an ultrasound may interfere with tissues and fluids in your body.6 Ultrasound waves may heat body tissues and produce small pockets of gas in body fluids or tissues. Suchandrima Bhowmik, Health, 22 June 2025 During intense space weather events, satellite signals struggle to reach Earth through an atmosphere suddenly ionized by clouds of energetic particles arriving from the sun. Tereza Pultarova, Space.com, 16 May 2025 So scientists now aim to detect a radio signal from the neutral hydrogen itself, before it was ionized, back through cosmic dawn and even into the dark ages. The Editors, JSTOR Daily, 30 Jan. 2025 This can help avoid the exposure to unnecessarily high doses of ionizing radiation. Jesse Pines, Forbes.com, 17 Apr. 2025 See All Example Sentences for ionize

Word History

Etymology

ion + -ize, after German ionisiren (now ionisieren) or French ioniser

First Known Use

1898, in the meaning defined at transitive sense

Time Traveler
The first known use of ionize was in 1898

Cite this Entry

“Ionize.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ionize. Accessed 3 Jul. 2025.

Kids Definition

ionize

verb
ion·​ize ˈī-ə-ˌnīz How to pronounce ionize (audio)
ionized; ionizing
1
: to convert wholly or partly into ions
2
: to become ionized
ionizable adjective
ionization noun
ionizer noun

Medical Definition

ionize

verb
ion·​ize
variants or chiefly British ionise
ionized or chiefly British ionised; ionizing or chiefly British ionising

transitive verb

: to convert wholly or partly into ions
ionizable adjective
or chiefly British ionisable
ionization noun
or chiefly British ionisation

More from Merriam-Webster on ionize

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