Enter a clue or pattern or both:
The Clue
Arsenic ___ (ratsbane) (8 letter answer)
The Answer
TRIOXIDE
Tags
Notes
The answer TRIOXIDE is so rare that it appears less than once every 2500 puzzles.
Related Clues
Compound containing O3
Definition
TRIOXIDE as a noun:
1. an oxide containing three atoms of oxygen in the molecule