Enter a clue or pattern or both:
The Clue
Mutualism (9 letter answer)
The Answer
SYMBIOSIS
Tags
Notes
The answer SYMBIOSIS is so rare that it appears less than once every 2500 puzzles.
Related Clues
Relationship between barnacles and whales, e.g.
Definition
SYMBIOSIS as a noun:
1. (symbiosis, mutualism) = the relation between two different species of organisms that are interdependent; each gains benefits from the other