Enter a clue or pattern or both:
The Clue
Constituent of pitchblende (7 letter answer)
The Answer
URANIUM
Tags
Notes
The answer URANIUM is so rare that it appears less than once every 2900 puzzles.
Related Clues
Fission material
At. no. 92
Pitchblende ingredient
Manhattan Project element
Definition
URANIUM as a noun:
1. (uranium, U, atomic number 92) = a heavy toxic silvery-white radioactive metallic element; occurs in many isotopes; used for nuclear fuels and nuclear weapons