spondylolisthesis

spon·dy·lo·lis·the·sis  (spndl--ls-thss)

n.

Forward displacement of one of the lower lumbar vertebrae over the vertebra below it or on the sacrum.

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[New Latin spondylolisthsis : Greek spondulos, vertebra + Greek olisthsis, dislocation, slipping (from olisthanein, to slip).]

Thesaurus

Noun

1.

spondylolisthesis - a forward dislocation of one vertebra over the one beneath it producing pressure on spinal nerves dislocation - a displacement of a part (especially a bone) from its normal position (as in the shoulder or the vertebral column)