Answer: omicron

AnswerCrossword Clue
OMICRONFraternity letter
omicronThe fifteenth star in a constellation
omicrona Greek letter, also OMIKRON
OMICRONO or O
OMICRON15th letter of the Greek alphabet
OMICRONHead of Olympus?
OMICRONOriginal opening to Homer's "Odyssey"?
OMICRONO
OMICRONA fraternity chapter
OMICRONCertain fraternity chapter
OMICRONAwfully moronic character from Greece (7)
OMICRONFirst letter given to Odysseus
OMICRONCircular Greek letter
OMICRONPlato's o
OMICRONBetween xi and pi
OMICRONGreek letter.
OMICRONFifteenth letter of Greek alphabet.
OMICRONO in Greek.
OMICRONXi-pi go-between
OMICRONHoi polloi character
OMICRONFrat letter
OMICRONGreek vowel
OMICRONGreek for "little O"
OMICRONGreek letter
OMICRONPi preceder
OMICRONXi follower