invertebrate
in·ver·teb·rate
adjective
noun
1.
any animal lacking a backbone or notochord; the term is not used as a scientific classification
Origin
From in- + vertebrate.
Related words
Word family
Broader terms
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.