n. pl. ver·te·brae(-brā′, -brē′) or ver·te·bras
Any of the segments, composed of cartilage in cartilaginous fishes and of bone in other vertebrates, that form the spinal column.
[Middle English, from Latin, from vertere, to turn; see wer-2 in the Appendix of Indo-European roots.]
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Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.