What is a synonym for "centrum"?

Common synonyms include: axis, body of vertebra, center, core, heart, hub.

Centrum

noun

noun ·Rare ·Advanced level

Noun

1
A centre.
2
the main body of a vertebra wordnet
3
The central body of a vertebra; the solid piece to which the arches and some other parts are or may be attached.
4
The basis or fundamental portion of one of the cranial segments, regarded as analogous to vertebrae.
5
The focus or place of origin of an earthquake.

From Middle English centrum, from Latin centrum. Doublet of centre.