The rare daily word game sweeping the globe. Find what's hidden in plain sight.
BIJECTION
Definition of BIJECTION
noun
A one-to-one correspondence, a function which is both a surjection and an injection.
Wiktionary · CC BY-SA
Where it comes from
From French bijection, introduced by Nicolas Bourbaki in their treatise Éléments de mathématique.
Etymology via Wiktionary (CC BY-SA).
OUTLIER scores every word on how unusual it is, and that number is not published. Working it out at the board is the game.
BIJECTION in OUTLIER
Players have found it on 1 board so far.
It first turned up on Day 114, 11 September 2026. Nobody has seen it on a board for 6 days.
First ever to find it
prettygoodbakerSUPPORTERContributor
on Day 114, 11 September 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
BIJECTION starts with B and ends with N. Sorted, its letters read BCEIIJNOT - the shape to hunt for when the grid is scrambled. I appears more than once. It uses J - among the least common letters in written English.
Words that start BIJECT
Its neighbours in the OUTLIER dictionary - shortest first.
Could you have found BIJECTION?
OUTLIER is a daily word game. One grid, the same grid for everybody, and the words nobody else spots are the ones that pay. This word was on Day 114 - and most players walked straight past it.
Play today's OUTLIER