Definition of protovertebra in English:

protovertebra

noun

  • Embryology. Each of the segments of the embryonic mesoderm which subsequently develop into the vertebrae and associated muscles. Formerly also: †a myotome, regarded as having a similar role (obsolete). Now rare.

Origin

Mid 19th century (in an earlier sense). From proto- + vertebra.

Pronunciation

protovertebra

/ˌprəʊtəʊˈvəːtɪbrə/