verb
To remove harmful or unwanted substances from something, especially water or air, so it becomes clean or safe.
This filter purifies the water before we drink it.
Common phrases & grammar
purify water · purify the air
American English
How to pronounce purifies
verbB2
pyerihfaiz
/pʰjɚˌɪˌfaɪz/
3 syllables.
Related entry: purify
To remove harmful or unwanted substances from something, especially water or air, so it becomes clean or safe.
Practice out loudMeanings & examples
Related words & forms
The y changes to i in purifies and purified, but not in purifying.