Morpheme
Hedr
Type
bound base
Denotation
seat, surface
Etymology
Ancient Greek hédra
Evidence
anhedral, cathedra, cathedrae, cathedral, cathedraled, cathedralesque, cathedralic, cathedralism, cathedrals, cathedras, cathedratic, dodecahedron, endohedral, euhedral, hexahedral, hexahedron, icosahedron, isohedral, noncathedral, octahedron, pentahedral, pentahedron, polyhedra, polyhedron, polyhedron, polyhedrons, procathedral, pyritohedron, rhombohedron, scalenohedron, subhedral, tetrahedron, trapezohedron, trihedron
Notes
cathedra, chair, and chaise are doublets