The word is in the Wiktionary

4 short excerpts of Wiktionnary (A collaborative project to produce a free-content dictionary.)

— English words —

• ultrafilter n. A device that performs ultrafiltration.
• ultrafilter n. (Mathematics, of a set, whose subsets are partially ordered by inclusion) A proper filter which has…
• ultrafilter n. (Mathematics, order theory) A filter (subset of a poset) that is maximal as a set with respect to the…
• ultrafilter v. (Transitive) To filter by ultrafiltration.

31 English words from 4 English definitions

are device filter has inclusion Mathematics maximal of␣a order ordered partially partially␣ordered performs poset proper respect set subset subsets that that␣is the theory to␣the Transitive ultrafiltration which whose with with␣respect with␣respect␣to

6 suffixes (New words found by adding one or more letters at the end of the word.)

ultrafilters ultrafiltered ultrafiltering ultrafilterable ultrafilterability ultrafilterabilities

3 times in the middle (New words found by adding letters in front and at the end of the word.)

free␣ultrafilters nonultrafilterable principal␣ultrafilters

2 prefixes (New words found by adding one or more letters in front of the word.)

free␣ultrafilter principal␣ultrafilter

24 words-in-word (Words found as is inside the word. Minimum size 3 letters.)

AFI -afil fil FIL Fil- filter Filter LTE LTR LTRA Raf RAF Rafi ter TER ter- tra TRA traf TRAF ult ult. ultra ultra-

17 words-in-word RTL (Words found written from right to left, inside the word. Minimum size 3 letters.)

art Art ART 'art art. ETL far FAR fart FART IFA lif LIF ret Ret. RTL TLI

2 anagrams found with an extra letter (New words formed with all the letters from the word and an extra letter.)

flat␣tire␣rule ultrafilters

2 anagrams found minus a letter (New words formed with all the letters from the word minus a letter.)

trailerful turritella

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