kehämäinen
kehä-
Circular or spherical in shape; round.
1731 ''(w)'', Weekly Essays in June 1731, Craftman, Sat. June 5, No. 257, p. 238:
(RQ:De Quincey Works)
Of a muscle, surrounding an opening; compare (m).
Pertaining to an orbicula.
(l)
orbicular muscle