lumbarization

noun

lum·​bar·​i·​za·​tion ˌləm-bə-rə-ˈzā-shən How to pronounce lumbarization (audio)
: a condition in which the first segment of the sacrum fails to fuse with the second segment so that it appears to be part of the lumbar vertebrae

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“Lumbarization.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/lumbarization. Accessed 27 Feb. 2025.

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