octagram means an eight-sided star polygon. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
octagram is pronounced /ˈɒk.tə.ɡɹæm/.
Etymology
From octa- + -gram.
noun
- An eight-sided star polygon.“It has a geometrical strapwork interlace of linked octograms with central eight-pointed stars.”