Enter a clue or pattern or both:
The Clue
Certain fraternity chapter (7 letter answer)
The Answer
OMICRON
Tags
Notes
The answer OMICRON is rarely seen, appearing only about once every 1200 puzzles.
Related Clues
A fraternity chapter
Fraternity letter
Greek letter
Pi preceder
Xi follower
Between xi and pi
Circular Greek letter
First letter given to Odysseus
Original opening to Homer's "Odyssey"?
Definition
OMICRON as a noun:
1. the 15th letter of the Greek alphabet