• synonyms


[klaw-struh m, klou-]
noun, plural claus·tra [klaw-struh, klou-] /ˈklɔ strə, ˈklaʊ-/. Anatomy.
  1. barrier.
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Origin of claustrum

1840–50; < New Latin; Latin: bolt, barrier, equivalent to claud(ere) to close, shut + -trum instrumental suffix; cf. cloister
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for claustra

Historical Examples of claustra

  • It is hardly so consistent with the national ideas and traditions as the claustra.

    A History of Art in Ancient Egypt, Vol. II (of 2)

    Georges Perrot

  • Fig. 156 gives the claustra in detail, in elevation, in plan, and in perspective.

  • Ibi enim eius prudentia construxit mœnia quadrata, turrita mole surgentia; claustra excipiendis adventantibus mirè opportuna.

claustra in Medicine


n. pl. claus•tra (-trə)
  1. Any of several anatomical structures resembling a barrier, especially a thin vertical lamina of gray matter of the brain lying close to the outer portion of the lenticular nucleus, from which it is separated by the external capsule.
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Related formsclaustral adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.