from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Abnormal rearward curvature of the spine, resulting in protuberance of the upper back; hunchback.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. An abnormal curvature of the spine, causing a hunchback.

from The Century Dictionary and Cyclopedia

  • n. In pathology, a curvature of the spine, convex backward. Also written cyphosis.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. an abnormal backward curve to the vertebral column


Greek kūphōsis, from kūphos, bent.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Ancient Greek κύφος (kuphos, "humpback, bent") + -osis (Wiktionary)



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