amphicelous

American  

[am-fuh-see-luhs] / ˌæm fəˈsi ləs /

Or amphicoelous

adjective

Anatomy, Zoology.

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

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Etymology

Origin of amphicelous

First recorded in 1865–70, amphicelous is from the Greek word amphíkoilos hollow at both ends. See amphi-, -cele ², -ous