• WordNet 3.6
    • adj invertebrate lacking a backbone or spinal column "worms are an example of invertebrate animals"
    • n invertebrate any animal lacking a backbone or notochord; the term is not used as a scientific classification
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Webster's Revised Unabridged Dictionary
  • Interesting fact: Octopus and squid are thought to be the most intelligent of all invertebrates
    • a Invertebrate (Zoöl) Destitute of a backbone; having no vertebræ; of or pertaining to the Invertebrata.
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Century Dictionary and Cyclopedia
    • invertebrate Not vertebrate; having no backbone; specifically, of or pertaining to the Invertebrata. Also invertebral, invertebrated.
    • invertebrate Figuratively, flaccid, as if from lack of a backbone; wanting strength, firmness, or consistency; weak; nerveless.
    • n invertebrate An invertebrated animal; any one of the Invertebrata.
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Chambers's Twentieth Century Dictionary
    • n Invertebrate an animal destitute of a skull and vertebral column
    • adj Invertebrate in-vėrt′ebrāt without a vertebral column or backbone: weak, irresolute
    • ***


In literature:

How high, for instance, stand the vertebrates above the invertebrates!
"The Theories of Darwin and Their Relation to Philosophy, Religion, and Morality" by Rudolf Schmid
M. C., an invertebrate animal, 49.
"The Biglow Papers" by James Russell Lowell
Haemolymph: the watery blood or lymph-like nutritive fluid of the lower invertebrates.
"Explanation of Terms Used in Entomology" by John. B. Smith
The volume closes with descriptions of the invertebrates.
"Boys and Girls Bookshelf; a Practical Plan of Character Building, Volume I (of 17)" by Various
"Freedom in Science and Teaching." by Ernst Haeckel
Let us take the case of the invertebrates, nearly all of which, as the birds, have a wide range.
"Practical Taxidermy" by Montagu Browne
Why should that invertebrate wastrel have turned up to plague us so?
"Lorimer of the Northwest" by Harold Bindloss
I can see you are accustomed to invertebrate admirers who spoil you.
"The Twelfth Hour" by Ada Leverson
DE: 1850, Memoire sur la phosphorescence de quelques invertebres marins.
"The Nature of Animal Light" by E. Newton Harvey
The mouth in the vertebrates does not agree in character with the invertebrate mouth.
"Degeneracy" by Eugene S. Talbot
Remains of crayfish were far more conspicuous than those of other invertebrates, and often made up the greater part of the scat.
"Ecology of the Opossum on a Natural Area in Northeastern Kansas" by Henry S. Fitch
A courtier, a lapdog, an invertebrate creature without power or dignity.
"The Tangled Skein" by Emmuska Orczy, Baroness Orczy
The different kinds of invertebrates upon which the mackerel feed are known as "Cayenne" and "red-seed.
"Fast Nine" by Alan Douglas
Distinction between vertebrate and invertebrate.
"A Civic Biology" by George William Hunter
I was too invertebrate to keep going without it.
"The Crime and the Criminal" by Richard Marsh
The stricken man flung up his arms, and, without a sound, collapsed in an invertebrate heap.
"The Datchet Diamonds" by Richard Marsh
Jackson is an invertebrate, lymphatic creature, of whose mental equipment I have no opinion at all.
"Under One Flag" by Richard Marsh
"The History of Creation, Vol. II (of 2)" by Ernst Haeckel
He laid down the characteristics of the class of invertebrates to which octopus and sepia belong.
"An Introduction to the History of Science" by Walter Libby
This highly developed condition of the circulatory system also distinguishes the molluscs from the other invertebrates.
"Elementary Zoology, Second Edition" by Vernon L. Kellogg

In news:

Black widow , Latrodectus mactans, invertebrates.
A fossil unearthed in Great Britain may end a long-running debate about the mollusks , one of life's most diverse invertebrate groups: Which evolved first, shelled forms like clams and snails, or their shell-less, worm-like relatives.
Invertebrate Central Pattern Generation Moves along.
Invertebrate Central Pattern Generation Moves along Current Biology, Volume 15, Issue 17, 6 September 2005, Pages R685-R699 Eve Marder, Dirk Bucher, David J Schulz and Adam L TaylorSummary.
Spotted salamanders spend most of their year underground, gorging on earthworms and other invertebrate treats.
In contrast, sea squirts are possibly the closest invertebrate relatives to humans, Drs.
Robot inspired by invertebrates has amazing, squishy possibilities.
In a study completed in 2009, University of Georgia researcher Will Ricks inventoried populations of invertebrates, small mammals, and songbirds in and around clover plots located in Pennsylvania, New York, Georgia, and Tennessee.
And the smell of the decomposing invertebrates is everywhere in this water-soaked village.
Ralph Charlton, Curator of Invertebrates at ABQ BioPark, shows off some of the exotic specimens on display in the Creeping , Crawling and Carnivorous Show at the Albuquerque Botanic Gardens.
They develop their trademark pink color from pigments in their food, which is made up of algae, crustaceans and other invertebrates.
Did you know that 95% of all animals are invertebrates.
According to symposium information, DeMouthe is a geologist in the Department of Invertebrate Zoology and Geology at the California Academy of Sciences.
The pillars supporting the pier are dressed in fantastic sponges and are home to all sorts of fish and invertebrates.
Game and Fish has requested higher releases to maintain fish spawning habitat and increase populations of the invertebrates that fish eat.

In science:

Henderson. A sex-specific metabolite identified in a marine invertebrate utilizing phosphorus-31 nuclear magnetic resonance.
A Developmental Network Theory of Gynandromorphs, Sexual Dimorphism and Species Formation
Hallam, “The case for sea-level change as a dominant causal factor in mass extinction of marine invertebrates,” Phil.
Simple models of evolution and extinction
Allelopathy and spatial competition among coral reef invertebrates.
Stochastic evolutionary game dynamics