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thecal sac

[ thee-kuhl sak ]
/ ˈθi kəl ˈsæk /
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noun Anatomy.
the loose membrane covering the spinal cord and containing cerebrospinal fluid; the spinal theca.
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Origin of thecal sac

First recorded in 1910–15
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

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