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CALIFORNIUM
Definition of CALIFORNIUM
noun
A strongly radioactive and highly fissile transuranic chemical element (symbol Cf) with an atomic number of 98. An atom of this element.
Wiktionary · CC BY-SA
Other senses
CALIFORNIUM carries 3 further meanings.
noun
A synthetic transuranic element having isotopes with mass numbers from 237 to 256 and half-lives varying from 21 milliseconds to 898 years. All isotopes are radioactive, chiefly by emission of alpha particles, and Cf-252 is a potent neutron emitter. Atomic number 98; melting point 900°C; specific gravity 15.1; valence 3. cross-reference: Periodic Table.
noun
a transuranic chemical element (symbol Cf) with an atomic number of 98.
noun
a radioactive transuranic element; discovered by bombarding curium with alpha particles
Where it comes from
From California + -ium. The element was first synthesized at Lawrence Berkeley National Laboratory (then the University of California Radiation Laboratory), thus named after the university and the U.S. state of California.
Etymology via Wiktionary (CC BY-SA).
Word DNA
How it is built
Same root, CALIFORNIUM · 1 relative in the game
CALIFORNIUM in a sentence
“You need some germanium crystals, a pinch of molybdenum, a teaspoon of californium ... and working with those short-lived superheavies is a royal pain, I'll tell you.”
OUTLIER scores every word on how unusual it is, and that number is not published. Working it out at the board is the game.
CALIFORNIUM in OUTLIER
Players have found it on 50 boards so far. 73 players have found it across Outlier's history.
It first turned up on Day 9, 29 May 2026. The most recent board was Day 164, 31 October 2026. Nobody has seen it on a board for 1 day.
First found by a player on Day 9, 29 May 2026.
Built from these letters
CALIFORNIUM starts with C and ends with M. Sorted, its letters read ACFIILMNORU - the shape to hunt for when the grid is scrambled. I appears more than once.
Also seen on Day 9
Could you have found CALIFORNIUM?
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 9 - and most players walked straight past it.
Play today's OUTLIER