Enter a clue or pattern or both:
The Clue
Rod-shaped bacterium (8 letter answer)
The Answer
BACILLUS
Tags
Notes
The answer BACILLUS is so rare that it appears less than once every 2500 puzzles.
Definition
BACILLUS as a noun:
1. (bacillus, B) = aerobic rod-shaped spore-producing bacterium; often occurring in chainlike formations; found primarily in soil