• synonyms


[spahy-nuh s]
See more synonyms for spinous on Thesaurus.com
  1. covered with or having spines; thorny, as a plant.
  2. armed with or bearing sharp-pointed processes, as an animal.
  3. spinelike.
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Origin of spinous

1630–40; < Latin spīnōsus; see spine, -ous
Related formsspi·nous·ness, nounin·ter·spi·nous, adjectivemul·ti·spi·nous, adjectivepost·spi·nous, adjectivesub·spi·nous, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words


Examples from the Web for spinous

Historical Examples

  • The spinous class of fishes is more prolific than any other animal.

    The Mosaic History of the Creation of the World

    Thomas Wood

  • In the first of these sub-families the tail is smooth, or unarmed, and in the second it is spinous.

    Reptiles and Birds

    Louis Figuier

  • Those which spring from the posterior of each arch are the spinous processes.

    A Practical Physiology

    Albert F. Blaisdell

  • The back bone receives its name, spine, or spinal column, from these spinous processes.

    A Treatise on Domestic Economy

    Catherine Esther Beecher

  • Spinous process, a process or bony protuberance, resembling a spine or thorn, whence it derives its name.

    A Treatise on Domestic Economy

    Catherine Esther Beecher

British Dictionary definitions for spinous


adjective biology
  1. resembling a spine or thornthe spinous process of a bone
  2. having spines or spiny projections
  3. another word for spinose
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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

spinous in Medicine


  1. Relating to, shaped like, or having a spine or spines.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.