Filter
/ˈfɪltə/
Last Updated: January 2, 2026 at 12:30 PM
Scrabble:9 ptsWWF:10 pts6 letters
Definition of Filter
noun
- A device which separates a suspended, dissolved, or particulate matter from a fluid, solution, or other substance; any device that separates one substance from another.
- Electronics or software that separates unwanted signals (for example noise) from wanted signals or that attenuates selected frequencies.
- Any item, mechanism, device or procedure that acts to separate or isolate.
"He runs an email filter to catch the junk mail."
- Self-restraint in speech.
"He's got no filter, and he's always offending people as a result."
- A non-empty upper set (of a partially ordered set) which is closed under binary infima (a.k.a. meets).
"If (1) the universal set (here, the set of natural numbers) were called a "large" set, (2) the superset of any "large" set were also a "large" set, and (3) the intersection of a pair of "large" sets were also a "large" set, then the set of all "large" sets would form a filter."
verb
- To sort, sift, or isolate.
"This strainer should filter out the large particles."
- To diffuse; to cause to be less concentrated or focused.
"The leaves of the trees filtered the light."
- To pass through a filter or to act as though passing through a filter.
"The water filtered through the rock and soil."
- To move slowly or gradually; to come or go a few at a time.
"The crowd filtered into the theater."
- To ride a motorcycle between lanes on a road
"I can skip past all the traffic on my bike by filtering."
Anagrams of Filter
Words You Can Make
50 words can be made from the letters in "filter":
Related Word Patterns
Synonyms & Antonyms
SYNONYMS
filter out
ANTONYMS
ideal