sacralization

noun
sa·cral·iza·tion | \ˌsā-krə-lə-ˈzā-shən \
variants: also British sacralisation \-ˌlī-ˈzā- \

Medical Definition of sacralization 

: incorporation (as of the last lumbar vertebra or any of its parts) into the sacrum specifically : a congenital anomaly in which the fifth lumbar vertebra is fused to the sacrum in varying degrees

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exaggeratedly or childishly emotional

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