apsidal
adjective
ap·si·dal ˈap-sə-dᵊl 
: of or relating to an apse or apsis
Word History
Etymology
Medieval Latin apsīd-, stem of apsīs "arc, vault" + -al entry 1
First Known Use
1807, in the meaning defined above
- by half
- by halves
- by hand
- by heart
- by hook or by crook
- by inches
- by invitation only
- by itself
- by jove
- by leaps and bounds
- by letter
- by machine
- by magic
- by marriage
- by means of
- by mistake
- by mutual consent
- by necessity
- by night
- by no means
- by no stretch of the imagination
- by numbers
- by one's lonesome
- by one's own account
- by one's own admission