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urostyle

[yoo r-uh-stahyl]
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noun Anatomy.
  1. the fused vertebrae at the posterior end of the spinal column of some fishes and tailless amphibians.
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Origin of urostyle

First recorded in 1870–75; uro-2 + -style2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for urostyle

Historical Examples

  • 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 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.

  • The post-sacral part of the spinal column ossifies continuously, forming an unsegmented cylindrical rod, the urostyle.

    The Vertebrate Skeleton

    Sidney H. Reynolds

  • The urostyle is a long rod-like bone forming the posterior unsegmented continuation of the vertebral column.

    The Vertebrate Skeleton

    Sidney H. Reynolds

British Dictionary definitions for urostyle

urostyle

noun
  1. the bony rod forming the last segment of the vertebral column of frogs, toads, and related amphibians
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Word Origin

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