The rare daily word game sweeping the globe. Find what's hidden in plain sight.
HELIOSTAT
Definition of HELIOSTAT
noun
A device that includes a plane mirror which turns so as to keep reflecting sunlight toward a predetermined target, compensating for the sun's apparent motions in the sky. The target may be a physical object, distant from the heliostat, or a direction in space, and is almost always stationary relative to the heliostat, so the light is reflected in a fixed direction.
Wiktionary · CC BY-SA
Where it comes from
First use appear c. 1747, from New Latin heliostata, from Ancient Greek ἥλιος (hḗlios, “sun”) + Latin status (“stationary”). By surface analysis, helio- + -stat.
Etymology via Wiktionary (CC BY-SA).
Word DNA
Line of descent
- Ancient Greek
- Latin
- English
2 recorded generations before English.
Deepest traced root
3rd
of 59 source languages in OUTLIER
12.4%
of traced words share this origin (10,337)
branch · 12.4% of traced words
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.
HELIOSTAT in OUTLIER
Players have found it on 3 boards so far.
It first turned up on Day 152, 19 October 2026. The most recent board was Day 167, 3 November 2026. Nobody has seen it on a board for 1 day.
First ever to find it
on Day 152, 19 October 2026 - before anyone else in Outlier's history. See the Pioneers
Built from these letters
HELIOSTAT starts with H and ends with T. Sorted, its letters read AEHILOSTT - the shape to hunt for when the grid is scrambled. T appears more than once.
Words that start HELIOS
Its neighbours in the OUTLIER dictionary - shortest first.
Could you have found HELIOSTAT?
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 152 - and most players walked straight past it.
Play today's OUTLIER