heptagonal

adj.

七角的，七边形的；

1. This pagoda has a heptagonal base.
   这座宝塔有个七边形的底座。

Septulene: The Heptagonal Homologue of Kekulene
Energetics of fullerenes with heptagonal rings
Phase Transition of XY Model in Heptagonal Lattice
Stone-Wales Rearrangements Involving Heptagonal Defects
Phase transition of $q$-state clock models on heptagonal lattices
Aromaticity of regular heptagonal P73- trianion in the MP72- (M = Li, Na, K, Rb, and Cs) species
Controlling acoustic streaming in an ultrasonic heptagonal tweezers with application to cell manipulation
Toroidal and spherical fullerene‐like molecules with only pentagonal and heptagonal faces
ChemInform Abstract: C62: Theoretical Evidence for a Nonclassical Fullerene with a Heptagonal Ring
Pairing of Pentagonal and Heptagonal Carbon Rings in the Growth of Nanosize Carbon Spheres Synthesized by a Mixed-Valent Oxide-Catal...