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uropygium

[yoo r-uh-pij-ee-uh m]
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noun Ornithology.
  1. the projecting terminal portion of a bird's body, from which the tail feathers spring.

Origin of uropygium

1805–15; < New Latin < Greek ouropȳ́gion, variant (with ouro- uro-2) of orropȳ́gion, equivalent to orro-, combining form of órros sacral bone + pȳg(ḗ) rump, buttocks + -ion diminutive suffix
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for uropygium

uropygium

noun
  1. the hindmost part of a bird's body, from which the tail feathers grow
Derived Formsuropygial, adjective

Word Origin

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