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The Collaborative International Dictionary
Lordosis

Lordosis \Lor*do"sis\, n. [NL., fr. Gr. ?, fr. ? bent so as to be convex in front.] (Med.)

  1. A curvature of the spine forwards, usually in the lumbar region.

  2. Any abnormal curvature of the bones.

Douglas Harper's Etymology Dictionary
lordosis

curvature of the spine, 1704, Modern Latin, from Greek lordosis, from lordos "bent backwards." Related: Lordotic.

Wiktionary
lordosis

n. 1 (context pathology English) An excessive curvature of the spine, causing a hollow in the back. 2 (context zoology English) A body posture of some female mammals, indicating receptivity to copulation.

WordNet
lordosis

n. an abnormal inward (forward) curvature of the vertebral column [syn: hollow-back]

Wikipedia
Lordosis

The term lordosis refers to the normal inward lordotic curvature of the lumbar and cervical regions of the spine. Excessive curvature of the lower back is known as lumbar hyperlordosis, commonly called hollow back or saddle back (after a similar condition that affects some horses). A major feature of lumbar hyperlordosis is a forward pelvic tilt, resulting in the pelvis resting on top of the thighs. Curvature in the opposite convex direction, in the thoracic and sacral regions is termed kyphotic. When this curvature is excessive it is called kyphosis or hyperkyphosis.

Usage examples of "lordosis".

Willie wanted to ask the old military man how serious lordosis might be in a war career.

The fact that he was going for a check on his pulse rate and lordosis did not spoil his enjoyment of the glances of stenographers and high-school girls.

I could inject a female rat with DBCA and within fifteen minutes she would begin exhibiting all the signs of readiness to mate -- ear twitching, lordosis, lubrication.

This lumbar lordosis and a tilted pelvis explain why all dwarfs waddle.

Mario had not so much club feet as more like block feet: not only flat but perfectly square, good for kicking knob-fumbled doors open with but too short to be conventionally employed as feet: together with the lordosis in his lower spine, they force Mario to move in the sort of lurchy half-stumble of a vaudeville inebriate, body tilted way forward as if into a wind, right on the edge of pitching face-first onto the ground, which as a child he did fairly often, whether given a bit of a shove from behind by his older brother Orin or no.

Congenital kyphosis is very rare in man, is generally seen in monsters, and when it does exist is usually accompanied by lordosis or spine bifida.

We sometimes observe a condition of anterior curvature of the lumbar and sacral regions, which might be taken for a congenital lordosis, but this is really a deformity produced after birth by the physiologic weight of the body.

Figure 131 represents a case of lordosis caused by paralysis of the spinal muscles.

He wrote decisively on the record: Mild lordosis well com-pensated.