[spahy-nuh s]


covered with or having spines; thorny, as a plant.
armed with or bearing sharp-pointed processes, as an animal.

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. 2019

Related Words for spinous

prickly, spiky, barbed, bristly, thistly, spiny, bristling, echinate, pricky

Examples from the Web for spinous

Historical Examples of spinous

British Dictionary definitions for spinous


adjective biology

resembling a spine or thornthe spinous process of a bone
having spines or spiny projections
another word for spinose
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




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