Concave at each end, as the body of a vertebra of a fish. ... Origin: amphi-+ G. Koilos, hollow ... (05 Mar 2000) ... 
Type: Term Pronunciation: am′fē-sē′lŭs Definitions: 1. Concave at both ends, as the body of a vertebra of a fish.
concave on both sides, as the bodies of the vertebrae of fishes.