[ thee-kuh l sak ]
/ ˈθi kəl ˈsæk /
the loose membrane covering the spinal cord and containing cerebrospinal fluid; the spinal theca.
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- theca cordis,
- theca folliculi,
- theca-cell tumor,
Origin of thecal sac
First recorded in 1910–15
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019