The rare daily word game sweeping the globe. Find what's hidden in plain sight.
CONCHOID
Definition of CONCHOID
noun
Any of a family of curves defined as the locus of points p, such that each p is on a line that passes through a given fixed point P and intersects a given curve, C, and the distance from p to the point of intersection with C is a specified constant (note that for nontrivial cases two such points p satisfy the criteria, and the resultant curve has two parts).
Wiktionary · CC BY-SA
Where it comes from
From Latin concha (“mussel”) (from Ancient Greek κόγχη (kónkhē)) + -oid or directly from Ancient Greek κογχοειδής (konkhoeidḗs), referring to the curved outline of a mussel shell or anything in this form. By surface analysis, conch + -oid.
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.
CONCHOID in OUTLIER
Players have found it on 1 board so far. 13 players have found it across Outlier's history.
It first turned up on Day 111, 8 September 2026. It was on the latest finished board.
First ever to find it
on Day 111, 8 September 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
CONCHOID starts with C and ends with D. Sorted, its letters read CCDHINOO - the shape to hunt for when the grid is scrambled. C and O appear more than once.
Words that start CONCHO
Its neighbours in the OUTLIER dictionary - shortest first.
Could you have found CONCHOID?
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 111 - and most players walked straight past it.
Play today's OUTLIER