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uropygium

[ yoor-uh-pij-ee-uhm ]

noun

, Ornithology.
  1. the projecting terminal portion of a bird's body, from which the tail feathers spring.


uropygium

/ ˌjʊərəˈpɪdʒɪəm /

noun

  1. the hindmost part of a bird's body, from which the tail feathers grow
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


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Derived Forms

  • ˌuroˈpygial, adjective
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Word History and Origins

Origin of uropygium1

1805–15; < New Latin < Greek ouropȳ́gion, variant (with ouro- uro- 2 ) of orropȳ́gion, equivalent to orro-, combining form of órros sacral bone + pȳg ( ) rump, buttocks + -ion diminutive suffix
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Word History and Origins

Origin of uropygium1

C19: via New Latin from Greek ouropugion, from uro- ² + pugē rump
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Example Sentences

The uropygium also, which in the European bird is entirely white, is in our specimen partially variegated with black.

The tail length, however, is measured from the base of the uropygium to the tip of the longest pair of rectrices.

Uropygium: the ovipositor when it is a mere extension of the abdominal segments.

Seaside Sparrows have a mid-dorsal row of downs in the dorsal tract near the uropygium.

In some of the families the uropygium is recorded as small in suspiciously close to 25 per cent of the offspring.

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uropygial glanduroscopy