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.
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
Make sure the purifier has carbon filters that remove volatile organic chemicals.
From The Wall Street Journal • Oct. 31, 2025
Ms Garg now spends nearly all her time indoors, next to her air purifier, trying to shield herself from the toxic air outside.
From BBC • Nov. 25, 2024
The number of air purifiers needed to meet this target varies based on the dimensions of the room, the model of air purifier and the speed and noise-level that occupants find acceptable for the purifier.
From Los Angeles Times • Nov. 21, 2024
She dropped it into the purifier, which made burbling noises as it came to a boil.
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.
