sacral hiatus
noun
: the opening into the spinal canal in the midline of the dorsal surface of the sacrum between the laminae of the fifth sacral vertebra
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“Sacral hiatus.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/sacral%20hiatus. Accessed 24 Dec. 2024.
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