or am·phi·coe·lous

[ am-fuh-see-luh s ]
/ ˌæm fəˈsi ləs /

adjective Anatomy, Zoology.

concave on both sides, as the bodies of the vertebrae of fishes.

Origin of amphicelous

First recorded in 1865–70, amphicelous is from the Greek word amphíkoilos hollow at both ends. See amphi-, -cele2, -ous Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019