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

Keep scrolling for more

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 most prominent absorption lines of hydrogen and ionized oxygen are at very short wavelengths, in the ultraviolet and X-ray portions of the spectrum. Quanta Magazine, "A Short History of the Missing Universe," 19 Sep. 2018 Gunn and a fellow graduate student, Bruce Peterson, noticed that the light from these quasars was missing a signature of neutral hydrogen, meaning the hydrogen gas surrounding the objects must have been ionized by starlight. Quanta Magazine, "The Astronomer Who’d Rather Build Space Cameras," 18 Apr. 2019 The sample is vaporized via heating, and bombarded with an electron beam to ionize the molecules. Jennifer Ouellette, Ars Technica, "Study brings us one step closer to solving 1994 thallium poisoning case," 25 Dec. 2018 The comet's green glow is due to cyanide and carbon molecules becoming ionized by the warmth of the sun. Temi Adebowale, Popular Mechanics, "Look Up! You Might Be Able to See a Green Comet Tonight," 7 Aug. 2018 Cell phones emit radiofrequency energy, a form of non-ionizing radiation, and the tissues in our bodies closest to the phone can absorb this energy. Jacqueline Howard, CNN, "Brain tumors on the rise in England, raising cell phone concerns," 2 May 2018 The atmosphere of Pluto interacts with solar winds and ionizes Pluto, giving it a tail that stretches across the system and out into space. John Wenz, Popular Mechanics, "Here's What We Know About Pluto So Far," 17 July 2015 The intense ultraviolet light from this era caused this murky neutral hydrogen to get excited and ionize, or gain electric charge, and the gas has remained in that state since that time. Charles Q. Choi, Scientific American, "Oldest Supermassive Black Hole Found from Universe’s Infancy," 6 Dec. 2017 Shull and his colleagues have been hunting for this ionized gas. Amina Khan, latimes.com, "After years of searching, scientists can finally account for all the normal matter in the universe," 20 June 2018

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.

See More

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

Keep scrolling for more

Learn More about ionize

Statistics for ionize

Last Updated

8 Jul 2019

Look-up Popularity

Time Traveler for ionize

The first known use of ionize was in 1898

See more words from the same year

Keep scrolling for more

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

Keep scrolling for more

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

Comments on ionize

What made you want to look up ionize? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

to form ideas or theories about something

Get Word of the Day daily email!

Test Your Vocabulary

Farm Idioms Quiz

  • cow coming home
  • What does 'poke' refer to in the expression 'pig in a poke'?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!