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

  • n. An abnormal forward curvature of the spine in the lumbar region.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. An excessive curvature of the spine, causing a hollow in the back.

from the GNU version of the Collaborative International Dictionary of English

  • n. A curvature of the spine forwards, usually in the lumbar region.
  • n. Any abnormal curvature of the bones.

from The Century Dictionary and Cyclopedia

  • n. In pathology
  • n. Abnormal curvature of the spinal column, with the convexity toward the front, in distinction from kyphosis, in which the convexity is toward the back, and from scoliosis, or lateral curvature.
  • n. Any abnormal curvature of the bones.

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

  • n. an abnormal inward (forward) curvature of the vertebral column


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

Greek lordōsis, from lordos, bent backward.


  • Once female pigs catch a whiff of androstenone they immediately assume a posture called lordosis, replete with a curved back and wiggly haunches.

    Smell Test

  • The queen will signal her willingness to mate with a unique posture: head down, forelegs bent, rear quarters raised to expose the vulva (this raised posture is called lordosis), with the tail raised and held to the side of the body, all designed to accomodate entry by the tom cat's penis.

  • Chronic use of heels can result -- and usually does -- in some degree of kyphosis-lordosis and related pains in the lower back and mid-upper back.

    Tim Ferriss: The Barefoot Alternative: Vibram Five Fingers Shoes

  • However if they get any larger or even much larger they cause lordosis and chiphosis of the upper and lower spine, shoulder ache, headaches and rib stress.

    Simply the Breast

  • I wish Bush would just let Steve Clemons blow him a couple times and then maybe he could get this kind of journalistic lordosis out of his system.

    Think Progress » ABC’s The Note: Bush Gave His ‘Best TV Performance In Years’ On 60 Minutes

  • After some initial maneuvering the castrated male responded to the advances of the unaltered male by bending his back and offering himself in what was to me indistinguishable from female-rat lordosis — behavior indicating receptivity to sex, pictures of which Gorski had shown me in his office.

    Homosexuality and Biology

  • This in turn “flattens out” the normal lumbar lordosis C-shaped curve of the spine as viewed from the side.

    Hold it!

  • Gloria tried to remember the medical term for it: it was something to do with a lordosis.


  • The lordosis resembles the similar deformity which develops in cases of primary myopathy, when the spinal muscles have undergone complete atrophy.

    The Nervous Child

  • The most striking feature is the extreme lordosis, accompanied usually by a secondary and compensatory curve in the cervico-dorsal region, so that the shoulders are rounded, with the head poked forward.

    The Nervous Child


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