← BackshareGuesspyramidical/ˌpɪrəˈmɪdɪkəl/adjectiveRelating to or having the shape of a pyramid.The mountain had a pyramidical peak that challenged climbers.They built a pyramidical structure out of sand at the beach.The garden was designed with pyramidical hedges that narrowed toward the top.Synonymspyramidicconicalpyramidal