Twelve-sided: because, a dihexagonal prism or pyramid: also always describe a double six-sided pyramid or quartzoid.

In crystallography, noting a kind of symmetry characterized by a hexad axis (that's, certainly one of six-fold symmetry) in which six planes of symmetry intersect. See symmetry.

Twelve-sided: since, a dihexagonal prism or pyramid: in addition used to explain a double six-sided pyramid or quartzoid.

In crystallography, noting a type of balance characterized by a hexad axis (which, certainly one of six-fold balance) by which six airplanes of symmetry intersect. See symmetry.

## How would you define dihexagonal?