The rare daily word game sweeping the globe. Find what's hidden in plain sight.
HYDROTHECA
Definition of HYDROTHECA
noun
One of the calyculi that protect the hydranths in certain hydrozoans.
Wiktionary · CC BY-SA
Where it comes from
From hydro- + theca.
Etymology via Wiktionary (CC BY-SA).
Word DNA
How it is built
OUTLIER scores every word on how unusual it is, and that number is not published. Working it out at the board is the game.
HYDROTHECA in OUTLIER
Players have found it on 1 board so far.
It first turned up on Day 137, 4 October 2026. It was on the latest finished board.
First ever to find it
on Day 137, 4 October 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
HYDROTHECA starts with H and ends with A. Sorted, its letters read ACDEHHORTY - the shape to hunt for when the grid is scrambled. H appears more than once.
Words that start HYDROT
Its neighbours in the OUTLIER dictionary - shortest first.
Could you have found HYDROTHECA?
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 137 - and most players walked straight past it.
Play today's OUTLIER