Capital Greek omega with a grave accent sloping down to the right, used in polytonic Greek.
U+1FF9GREEK CAPITAL LETTER OMICRON WITH OXIAU+1FFBGREEK CAPITAL LETTER OMEGA WITH OXIAU+1FF8GREEK CAPITAL LETTER OMICRON WITH VARIAU+1FFCGREEK CAPITAL LETTER OMEGA WITH PROSGEGRAMMENIU+1FF7GREEK SMALL LETTER OMEGA WITH PERISPOMENI AND YPOGEGRAMMENIU+1FFDGREEK OXIAU+1FF6GREEK SMALL LETTER OMEGA WITH PERISPOMENIU+1FFEGREEK DASIAU+1FF4GREEK SMALL LETTER OMEGA WITH OXIA AND YPOGEGRAMMENIU+1FF3GREEK SMALL LETTER OMEGA WITH YPOGEGRAMMENIU+1FF2GREEK SMALL LETTER OMEGA WITH VARIA AND YPOGEGRAMMENIU+1FEFGREEK VARIA233 characters in the Greek Extended Unicode block, from number 229.