urostyle

[ yoo r-uh-stahyl ]

/ ˈyʊər əˌstaɪl /

noun Anatomy.

the fused vertebrae at the posterior end of the spinal column of some fishes and tailless amphibians.

Nearby words

Origin of urostyle

First recorded in 1870–75; uro-² + -style²

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for urostyle

The urostyle is post-sacral and corresponds to three or more modified vertebrae.
The Vertebrate Skeleton|Sidney H. Reynolds
The urostyle is the name given to a modified bony structure, originally the end of the notochord, turned upward in most fishes.
A Guide to the Study of Fishes, Volume 1 (of 2)|David Starr Jordan
The post-sacral part of the spinal column ossifies continuously, forming an unsegmented cylindrical rod, the urostyle.
The Vertebrate Skeleton|Sidney H. Reynolds
The ultimate changes of the notochord and urostyle vary very considerably in the different types of Teleostei.
The Works of Francis Maitland Balfour, Volume III (of 4)|Francis Maitland Balfour

The urostyle is a long cylindrical rod which articulates with the sacrum generally by two facets.
The Vertebrate Skeleton|Sidney H. Reynolds

British Dictionary definitions for urostyle

urostyle

/ (ˈjʊərəʊˌstaɪl) /

noun

the bony rod forming the last segment of the vertebral column of frogs, toads, and related amphibians

Word Origin for urostyle

C19: from uro- ² + Greek stulos pillar

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