A single human vertebra.Licensed from iStockPhoto
Used by arrangement with John Wiley & Sons, Inc.
noun pl. ver·te·brae or ver·te·bras
Origin: Middle English, from Latin, from vertere, to turn; see wer-2 in Indo-European roots.
vertebra - Medical Definition
noun pl. ver·te·bras or ver·te·brae
vertebra - Science Definition
Plural vertebrae vertebrae or vertebras
Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.