The word is in the Wiktionary

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

— English word —

• RREF n. (Mathematics) Initialism of reduced row echelon form.

9 English words from the English definition

echelon echelon␣form form Initialism Mathematics reduced reduced␣row␣echelon␣form row row␣echelon␣form

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

torrefy correfoc correfocs serrefile serrefine torrefied torrefies Kerr␣effect overrefine serrefiles serrefines torrefacto torrefying irreflexive irrefusable irrefutable irrefutably overrefined overrefines superrefine air␣refresher irreflection irreflective irreformable irreformably irrefragable irrefragably irrefragible overrefining superrefined superrefines torrefaction air␣refreshers counterreform hyperreflexia hyperreflexic irreferential irreflexively irrefrangible irrefrangibly overreference overrefreshed superrefining torrefactions counterreforms hyperreflexias hyperreflexive interreference irrefutability microserrefine +50 words

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

ref Ref REF Ref.

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

err Err. fer FER f***er ferr-

One anagram (New word found by changing the order of the letters.)

ferr-

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

farer farre Ferra Ferre Ferri ferri- Ferro ferro- ferry Ferry firer Frear freer Freer Frere Freyr frier Frier frore fryer Fryer refer refry rifer

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

erf err Err. fer FER f***er ref Ref REF Ref. RFE

7 cousins (New words found by changing only one letter.)

JREF pref Pref. reef Reef rief tref

4 lipograms (New words found when removing only one letter.)

ref Ref REF Ref.

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