purifier
Britishnoun
Explanation
A purifier is something that filters dangerous contaminants out of water or air. If you bring a good water purifier along on your camping trip, you can safely drink from rivers and streams. Air purifiers are useful for removing dust and other allergens from the air, as well as smoke particles and even viruses and other microscopic germs. People with gas stoves or wood-burning fireplaces in their homes often use air purifiers to ensure that the air they breathe is safe and clean. Purifier comes from the verb purify, or "cleanse," and the Latin root purus, "pure."
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.
This ghost rattles industrial hoses and temporarily melds with an air purifier.
From Los Angeles Times ● Feb. 4, 2026
After pitching their best ideas—an automated pothole-repair machine, a wearable air purifier for people with allergies—the students coalesced around a winner: a self-inflating-tire product.
From The Wall Street Journal ● Nov. 12, 2025
Dorsey recommends using an air purifier, particularly if you live in an urban area.
From The Wall Street Journal ● Oct. 31, 2025
But what kind of air purifier should residents get?
From Los Angeles Times ● Jan. 14, 2025
She had no shoes, no hoverboard, no friends, not even a water purifier or a packet of SpagBol.
From "Uglies" by Scott Westerfeld
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
