- not vertebrate; without a backbone.
- of or relating to creatures without a backbone.
- without strength of character.
- an invertebrate animal.
- a person who lacks strength of character.
Origin of invertebrate
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for invertebrate
I can see you are accustomed to invertebrate admirers who spoil you.The Twelfth Hour
We are invertebrate, and on the evil day we are not able to stand.My Daily Meditation for the Circling Year
John Henry Jowett
After all, was the fellow quite so invertebrate as he had sometimes seemed?The Brentons
Anna Chapin Ray
First invertebrate life, then the lowest forms of vertebrate life.The Prehistoric World
E. A. Allen
It avoids the invertebrate flow of thought that is unaware of structure.Expository Writing
Mervin James Curl
- any animal lacking a backbone, including all species not classified as vertebrates
- of, relating to, or designating invertebrates
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
Word Origin and History for invertebrate
Online Etymology Dictionary, © 2010 Douglas Harper
- Lacking a backbone or spinal column; not vertebrate.
- Of or relating to invertebrates.
- An animal, such as an insect or a mollusk, that lacks a backbone or spinal column.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- Having no backbone or spinal column.
- An animal that has no backbone or spinal column and therefore does not belong to the subphylum Vertebrata of the phylum Chordata. Most animals are invertebrates. Corals, insects, worms, jellyfish, starfish, and snails are invertebrates.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.