apsidal

adjective
ap·​si·​dal | \ ˈap-sə-dᵊl How to pronounce apsidal (audio) \

Definition of apsidal

: of or relating to an apse or apsis

First Known Use of apsidal

1807, in the meaning defined above

History and Etymology for apsidal

Medieval Latin apsīd-, stem of apsīs "arc, vault" + -al entry 1

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