noun ·Uncommon ·Advanced level

Definitions

Noun

1. 1
   An excessive backwards curvature of the spine, causing in normal human physiology a hollow in the back (lumbar lordosis, hollow back, saddle back) or the neck (cervical lordosis). countable, uncountable
2. 2
   an abnormal inward (forward) curvature of the vertebral column wordnet
3. 3
   A body posture of some female mammals, indicating receptivity to copulation. It involves lowering of the forelimbs but with the rear limbs extended and hips raised, ventral arching of the spine and a raising, or sideward displacement, of the tail. countable, uncountable

Synonyms

All synonyms

camelbackcleft palateclubfootdeformitydisfigurementflatfoot

Antonyms

All antonyms

kyphosis

Etymology

From Ancient Greek λορδός (lordós, “bent backward”) + -osis.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.