heptagon
septangle
septangular
antiferromagnetic
brasswork
carbonfund.org
close-packed
cubical
diamond-paned
dimensioning
dry dock
force-field
four-point
geodesic
hexagonal
icosahedral
isometric
non-physical
pentagonal
posteriori
rose-hung
spinel
tetrahedral
threedimensional
transdimensional
wide-flung