• WordNet 3.6
    • n diverticulum a herniation through the muscular wall of a tubular organ (especially the colon)
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Webster's Revised Unabridged Dictionary
    • n Diverticulum (Anat) A blind tube branching out of a longer one.
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Century Dictionary and Cyclopedia
    • n diverticulum In anatomy, a cæcum; a blind tubular process; a hollow offset ending blindly; a cul-de-sac. Diverticula are very frequent formations, especially in connection with the alimentary canal, in which case they are usually known as cœca. (See cut under alimentary.) The term, however, is of very general applicability.
    • n diverticulum Any short side passage of the nature of a cul-de-sac or blind alley.
    • n diverticulum In algol., a protrusion of protoplasm communicating with the fused procarp cells and the placenta.
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Webster's Revised Unabridged Dictionary
L. See Diverticle


In literature:

Food reservoir: Lepidoptera, a blind sac or diverticulum from the bind part of oesophagus lying in abdomen dorsal to the stomach.
"Explanation of Terms Used in Entomology" by John. B. Smith
More ventrally another slight diverticulum probably represents the infundibulum.
"Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 4" by Various
Cross section through the base of the proboscis showing diverticulum wall and proboscis gland.
"Journal of Entomology and Zoology" by Various
The gall-bladder may be present or absent; it is always a diverticulum of the hepatic duct.
"The Cambridge Natural History, Vol X., Mammalia" by Frank Evers Beddard
Embryology, however, shows that the swimbladder arises as a localized diverticulum.
"Encyclopaedia Britannica, 11th Edition, Volume 14, Slice 3" by Various
On the inner wall of this diverticulum a projection is formed which becomes a glomerulus.
"The Works of Francis Maitland Balfour, Volume 1" by Francis Maitland Balfour

In news:

Killian-Jamieson diverticulum is generally smaller than Zenker diverticulum and is associated with less dysphagia, regurgitation, and gastroesophageal reflux.
Pharyngocele, or lateral pharyngeal diverticulum (LPD), is rare, as only a few cases have been described.
Imaging techniques-particularly computed tomography-are beneficial for diagnosing a tracheal diverticulum because bronchoscopy can sometimes miss the point of communication with the trachea .