(n.) One of the primitive masses or segments, into which the mesoblast of the vertebrate embryo breaks up on either side of the anterior part of the notochord; a mesoblastic or protovertebral, somite. See Illust. of Ectoderm.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). Protovertebra. Retrieved September 22, 2026, from http://smartdefine.org/protovertebra/definitions/2050270 |
| Chicago | Webster's. 2011. "Protovertebra" http://smartdefine.org/protovertebra/definitions/2050270 (accessed September 22, 2026). |
| Harvard | Webster's 2011, Protovertebra, Smart Define, viewed 22 September, 2026, <http://smartdefine.org/protovertebra/definitions/2050270>. |
| MLA | Webster's. "Protovertebra" 27 May 2011. Web. 22 September 2026. <http://smartdefine.org/protovertebra/definitions/2050270> |