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The Collaborative International Dictionary
Diverticula

Diverticulum \Div`er*tic"u*lum\, n.; pl. Diverticula. [L. See Diverticle.] (Anat.) A blind tube branching out of a longer one. [1913 Webster] ||

Wiktionary
diverticula

n. (plural of diverticulum English)

WordNet
diverticula
diverticulum
  1. n. a herniation through the muscular wall of a tubular organ (especially the colon)

  2. [also: diverticula (pl)]