Language	Term	Definition	See also
English	centrum	A bony segment of the backbone.	vertebral column vertebra
English	vertebra	Bony or cartilaginous elements surrounding the notochord or replacing it and often protecting the spinal cord and caudal vein. Vertebrae are composed of a centrum formed from two pleurocentra and two intercentra or parts of these elements, a neural arch formed by the interdorsal and basidorsal of each side, a neural spine fused to the neural arch, a haemal arch formed from the fusion of the interventral and basiventral, and a haemal spine fused to the haemal arch. Petromyzontidae lack centra and have a persistent notochord. Elasmobranchii have a centrum with a notochord core surrounded by a ring of cartilage (chordacentrum) to which the neural and haemal arches (arcocentra) attach and an outer ring of cartilage (autocentrum) interrupted by the arches. The cartilage becomes calcified (cyclospondylous, asterospondylous, tectospondylous) (plural vertebrae).	vertebral column centrum vertebral counts
French	centrum	Un segment osseux de la colonne vertébrale.	colonne vertébrale vertèbre
Spanish	centrum	Segmento óseo de la columna vertebral.
Portuguese	vértebra	Segmento ósseo da coluna vertebral.	coluna vertebral vértebra

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