Meaning of LORDOSIS in English

LORDOSIS

noun (plural lordoses) Etymology: New Latin, from Greek lordōsis, from lordos curving forward; akin to Old English belyrtan to deceive Date: 1704 abnormally increased inward curvature of the lower region of the spine resulting in a concave back as viewed from the side, a mating posture of some sexually receptive female mammals (as rats) in which the head and rump are raised and the back is arched downward, lordotic adjective

Merriam Webster. Explanatory English dictionary Merriam Webster.      Толковый словарь английского языка Мерриам-Уэбстер.