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TERBIUM
Definition of TERBIUM
noun
A metallic chemical element (symbol Tb) with an atomic number of 65: a soft, silvery-white, rare earth metal that is malleable and ductile. An atom of this element.
Wiktionary · CC BY-SA
Other senses
TERBIUM carries 4 further meanings.
noun
A soft, silvery-gray metallic rare-earth element, extracted chiefly from monazite, used in high-temperature fuel cells as a stabilizer and in alloys responsive to a magnetic field. Terbium oxide provides an important phosphor in cathode-ray tubes and low-energy lighting applications. Atomic number 65; atomic weight 158.925; melting point 1,356°C; boiling point 3,230°C; specific gravity 8.230; valence 3, 4. cross-reference: Periodic Table.
noun
A rare element, not yet isolated, occurring in the samarskite of North Carolina and certain other rare minerals, associated with erbium and yttrium.
noun
A rare metallic element, found in certain minerals, as gadolinite and samarskite, with other rare earths such as ytterbium. Symbol Tb. Atomic number 65. Atomic weight 158.925.
noun
a metallic chemical element (symbol Tb) with an atomic number of 65
Where it comes from
From Ytterby + -ium, named after Ytterby, Sweden. Doublet of erbium, ytterbium, and yttrium
Etymology via Wiktionary (CC BY-SA).
Word DNA
How it is built
Same root, TERBIUM · 1 relative in the game
TERBIUM in a sentence
“Indeed, some international prices haven't fallen at all, in particular those that are known as heavy rare earths, like terbium, which is used in advanced lasers and optics.”
OUTLIER scores every word on how unusual it is, and that number is not published. Working it out at the board is the game.
TERBIUM in OUTLIER
Players have found it on 54 boards so far. 85 players have found it across Outlier's history.
It first turned up on Day 31, 20 June 2026. The most recent board was Day 162, 29 October 2026. Nobody has seen it on a board for 1 day.
First found by a player on Day 31, 20 June 2026.
Built from these letters
TERBIUM starts with T and ends with M. Sorted, its letters read BEIMRTU - the shape to hunt for when the grid is scrambled. No letter is used twice, which makes it an isogram.
Same letters, different word
One other word uses exactly these letters. Worth knowing at the board: an anagram fits a grid the same way.
Also seen on Day 31
Could you have found TERBIUM?
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 31 - and most players walked straight past it.
Play today's OUTLIER