octagonal Synonyms

octangular aniseed octosyllabic octuple oxygonal pentagonal pentahedral polygon polygonal rhombohedral septennial sexennial trapezohedral trapezoid dodecagonal octadic octal octan octonary octofid octennial decagonal dodecahedral eight eighteen eightfold heptagonal hexagonal hexahedral hexangular icosahedral many-sided multilateral octad octagon octahedral octastyle eight-sided