ionize

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

Definition of ionize

transitive verb

: to convert wholly or partly into ions

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Other Words from ionize

ionizable \ ˈī-​ə-​ˌnī-​zə-​bəl How to pronounce ionizable (audio) \ adjective
ionizer \ ˈī-​ə-​ˌnī-​zər How to pronounce ionizer (audio) \ noun

Examples of ionize in a Sentence

Recent Examples on the Web The beautiful image, which spans 190 light-years, is one of a set of long, thin strands of ionized gas called filaments. Fox News, "NASA spots cosmic 'candy cane' in Milky Way," 19 Dec. 2019 Mobile phones and cell towers transmit radio signals at frequencies well below those of X-rays and ultraviolet light, which are strong enough to damage human cells and DNA, and are categorized as ionizing radiation. Aaron Pressman, Fortune, "Does 5G cause or spread coronavirus? Here’s what experts say," 7 Apr. 2020 Just to clear up a popular misconception: These microwaves are non-ionizing radiation. Tech Talker Eric Escobar, Scientific American, "How Does Wi-Fi Work?," 15 July 2015 Unlike visible light, radio waves can reveal phenomena like hydrogen ionized in the early days of the universe, pulsars orbiting black holes, and maybe even alien signals. Laura Mallonee, Wired, "The Largest Scientific Structure Ever Powers Up in Africa," 17 Dec. 2019 The low-frequency antennas observe radio emissions from pulsars—spinning neutron stars—and the epoch of reionization, when light from the universe’s first stars was ionizing the hydrogen in the space between galaxies. Dennis Normile, Science | AAAS, "Giant radio telescope array prepares to begin construction in Australia and South Africa," 25 Nov. 2019 While Lyudmilla watched a column of fire and bluish-purple ionized air rise into the night, my husband was asleep 60 miles away: a toddler in a Kiev apartment. Bathsheba Demuth, BostonGlobe.com, "Chernobyl reminds us of the tragic cost of lies," 28 June 2019 That's in contrast to ionizing radiation, such as gamma rays and X-rays, which can remove electrons. Beth Mole, Ars Technica, "Woman who sleeps in $500 EMF-blocking sack wants area-wide Wi-Fi limits," 30 Sep. 2019 The unit of measurement for the impact of ionizing radiation on a person’s health is called a sievert. Carolyn Kormann, The New Yorker, "Is Nuclear Power Worth the Risk?," 22 Dec. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'ionize.' 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 ionize

1898, in the meaning defined at transitive sense

History and Etymology for ionize

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

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Time Traveler for ionize

Time Traveler

The first known use of ionize was in 1898

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Statistics for ionize

Cite this Entry

“Ionize.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ionize. Accessed 6 Aug. 2020.

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More Definitions for ionize

ionize

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

Kids Definition of ionize

: to change into ions

ionize

verb
ion·​ize
variants: or chiefly British ionise \ ˈī-​ə-​ˌnīz How to pronounce ionise (audio) \
ionized or chiefly British ionised; ionizing or chiefly British ionising

Medical Definition of ionize

transitive verb

: to convert wholly or partly into ions

Other Words from ionize

ionizable or chiefly British ionisable \ -​ˌnī-​zə-​bəl How to pronounce ionisable (audio) \ adjective
ionization or chiefly British ionisation \ ˌī-​ə-​nə-​ˈzā-​shən How to pronounce ionisation (audio) \ noun

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More from Merriam-Webster on ionize

Rhyming Dictionary: Words that rhyme with ionize

Spanish Central: Translation of ionize

Nglish: Translation of ionize for Spanish Speakers

Britannica English: Translation of ionize for Arabic Speakers

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