jejunum
noun
the middle portion of the small intestine, between the duodenum and the ileum.
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The intestine has neither duodeno jejunal flexure nor a caecum; the prostate gland is rudimentary; but glands occur in the vasa deferentia; and the penial bone is cylindrical.
From Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 4 "Carnegie Andrew" to "Casus Belli" by Various