apsidal

[Lat. apsidis, gen it, of apsis; and Eng. suffix -al = pertaining to.] [APSE.] Church of St. Julien, Brioude, Auvergne. 1. Pertaining or relating to an architectural apse or apsis. "Gloucester Cathedral crypt, with aisle and three radiating apsidal chapels."-Glo . of Arch . (1850), p. 29. 2. Relating to the apsides of the moon or of the primary planets.