Pathology. an abnormal forward curvature of the spine in the lumbar region, resulting in a swaybacked posture. Compare kyphosis, scoliosis.
a posture assumed by some female mammals during mating, in which the back arches downward.

1695–1705; < Neo-Latin < Greek lórdōsis literally, a bending back, equivalent to lord(ós) bent backwards + -ōsis -osis

lordotic [lawr-dot-ik] , adjective
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World English Dictionary
lordosis (lɔːˈdəʊsɪs)
1.  pathol kyphosis Compare scoliosis Nontechnical name: hollow-back forward curvature of the lumbar spine: congenital or caused by trauma or disease
2.  zoology concave arching of the back occurring in many female animals during sexual stimulation
[C18: New Latin from Greek lordōsis, from lordos bent backwards]

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Word Origin & History

1704, Mod.L., from Gk. lordosis, from lordos "bent backwards."
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

lordosis lor·do·sis (lôr-dō'sĭs)
An abnormal forward curvature of the spine in the lumbar region. Also called hollow back, saddle back.

lor·dot'ic (-dŏt'ĭk) adj.
The American Heritage® Stedman's Medical Dictionary
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Example sentences
Lordosis tends to make the buttocks appear more prominent.
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