acentrous

From a- + centre + -ous.

acentrous (comparative more acentrous, superlative most acentrous)

1. (ichthyology) lacking vertebral centra
   • 2001, "Axial Skeleton", David Cannatella, [1]

     "Some bony fishes (Teleostei, Amia, Lepisosteus, and Brachiopterygii) have well-ossified centra and neural and hemal arches. Others (Dipnoi, Latimeria, and Chondrostei) lack centra (acentrous), and the notochord is unconstricted, and the bony neural and hemal arches simply rest on it."

• Dictionary of Ichthyology, Brian W. Coad and Don E. McAllister (2005), accessed on 2005-05-08

• ancestour, auncestor, courantes, courtesan, ctenosaur, nectarous, outrances