Definition of lordosis
plural lordoses
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\lȯr-ˈdō-ˌsēz\
1 a
: the normal convex curvature of the cervical and lumbar regions of the spine
b
: abnormally exaggerated forward curvature of the lumbar and cervical regions of the spine resulting in a concave back when viewed from the side : hyperlordosis, swayback — compare kyphosis
2
: a mating posture of some sexually receptive female mammals (such as rats) in which the head and rump are raised and the back is arched downward
