uropygium

American  

[yoor-uh-pij-ee-uhm] / ˌyʊər əˈpɪdʒ i əm /

noun

Ornithology.

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

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uropygium British  

/ ˌjʊərəˈpɪdʒɪəm /

noun

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

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Other Word Forms

• uropygial adjective

Etymology

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

Example Sentences

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

From Project Gutenberg

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

From Project Gutenberg

Associated words: caudal, dock, scut, prehensile, caudate, bicaudal, rump, uropygium. tailless, a. acaudate, anurous. tailor, n.

From Project Gutenberg

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

From Project Gutenberg