ionize
verb (used with object)
to separate or change into ions.
ionizing
-
present participleof ionize.present participle
A verb form that is used in progressive verb constructions and may also function as a modifier or a gerund.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
These newly discovered quasars come from a critical period known as the epoch of reionization, when the first stars and galaxies transformed the early universe by ionizing the neutral hydrogen gas that once filled space.
From Science Daily ● Jul. 9, 2026
MRI did what X-rays couldn't do: See soft tissue without using ionizing radiation.
From The Wall Street Journal ● Apr. 24, 2026
Ultrasound is non-invasive, does not use ionizing radiation and has no known harmful effects.
From BBC ● Dec. 3, 2025
The observation showed that the burst’s photons were reaching down to just 60 kilometers above the surface and ionizing more molecules in the air, creating a better reflector.
From Science Magazine ● Nov. 14, 2023
Such materials, present as contaminants in water that also contains chemicals, may actually change the nature of the chemicals by the impact of ionizing radiation, rearranging their atoms in unpredictable ways to create new chemicals.
From "Silent Spring" by Rachel Carson
