Amphicoelia
plural noun
Am·phi·coe·lia
ˌamfəˈsēlēə
in some classifications
: an order of extinct crocodilians comprising Mesozoic forms with amphicoelous or amphiplatyan presacral vertebrae
Word History
Etymology
New Latin, from Late Greek amphikoilos + New Latin -ia
First Known Use
1860, in the meaning defined above