lumbarization

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English[edit]

Etymology[edit]

lumbar +‎ -ization

Noun[edit]

lumbarization (countable and uncountable, plural lumbarizations)

  1. A spinal anomaly in which the first and second segments of the sacrum do not fuse, and consequently the lumbar spine appears to have six vertebrae or segments, not five, while the sacrum appears to have only four.
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