English
lumbarization
From lumbar + -ization.
Formed from lumbar + -ization
Proto-Indo-European *lendʰ- ‘to enter, penetrate, expand’
Latin lumbus ‘loin’
Latin lumbāris
English lumbar
Today it means
noun 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.
Language periods are conventional ranges, not dates for this word.
Etymograph / lumbarization