Octagon
/ˈɑːk.tə.ɡən/noun
A polygon with eight sides and eight angles.
Did you know?In ancient Greek, the same root behind Octagon also lives in Octopus, Octave, and October—proof that this “eight” root spread everywhere from sea creatures to sacred time.
Etymological Timeline
Proto-Indo-European
PIE
*oḱtṓw
“eight”
Ancient Greek
Greek
oktṓ
“eight”
Ancient Greek
Greek
gōnía
“angle, corner”
Late Latin
Latin
octagonum
“an eight-angled figure”
Middle English
English
octagon
“an eight-sided shape”