thecal sac

[ thee-kuh l sak ]
/ ˈθi kəl ˈsæk /

noun Anatomy.

the loose membrane covering the spinal cord and containing cerebrospinal fluid; the spinal theca.

Nearby words

  1. theca,
  2. theca cordis,
  3. theca folliculi,
  4. theca-cell tumor,
  5. thecal,
  6. thecate,
  7. thecitis,
  8. thecium,
  9. theco-,
  10. thecodont

Origin of thecal sac

First recorded in 1910–15

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019