六ろっ方ぽう最さい密みつ充じゅう填てんろっぽうさいみつじゅうてんMeanings1nounhexagonal close packinggeology›Technical term in geology and crystallography for the arrangement of atoms or particles in a hexagonal close-packed structure.六ろっ方ぽう最さい密みつ充じゅう填てんは、結