 | Octagon In geometry, an octagon (from the Greek ὀκτάγωνον oktágōnon, "eight angles") is a polygon that has eight sides. |
 | Octagram In geometry, an octagram is an eight-sided star polygon. |
 | Octave clef Treble and bass clefs can also be modified by octave numbers. |
 | Octopus (Apple iOS 12.2) |
