Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of invertebrate is as below...

Oar :: Oar (n) An oarlike swimming organ of various invertebrates.

Tooth :: Tooth (n.) Any hard calcareous or chitinous organ found in the mouth of various invertebrates and used in feeding or procuring food; as, the teeth of a mollusk or a starfish..

Perisome :: Perisome (n.) The entire covering of an invertebrate animal, as echinoderm or coelenterate; the integument..

Insect :: Insect (n.) Any small crustacean. In a wider sense, the word is often loosely applied to various small invertebrates..

Testacea :: Testacea (n. pl.) Invertebrate animals covered with shells, especially mollusks; shellfish..

Heterogangliate :: Heterogangliate (a.) Having the ganglia of the nervous system unsymmetrically arranged; -- said of certain invertebrate animals.

Neural :: Neural (a.) relating to the nerves or nervous system; taining to, situated in the region of, or on the side with, the neural, or cerebro-spinal, axis; -- opposed to hemal. As applied to vertebrates, neural is the same as dorsal; as applied to invertebrates it is usually the same as ventral. Cf. Hemal..

Pneumoskeleton :: Pneumoskeleton (n.) A chitinous structure which supports the gill in some invertebrates.

Lithocyst :: Lithocyst (n.) A sac containing small, calcareous concretions (otoliths). They are found in many Medusae, and other invertebrates, and are supposed to be auditory organs..

Scale :: Scale (n.) One of the small scalelike structures covering parts of some invertebrates, as those on the wings of Lepidoptera and on the body of Thysanura; the elytra of certain annelids. See Lepidoptera..

Hair :: Hair (n.) One the above-mentioned filaments, consisting, in invertebrate animals, of a long, tubular part which is free and flexible, and a bulbous root imbedded in the skin..

Neurula :: Neurula (n.) An embryo or certain invertebrates in the stage when the primitive band is first developed.

Testa :: Testa (n.) The external hard or firm covering of many invertebrate animals.

Spermatheca :: Spermatheca (n.) A small sac connected with the female reproductive organs of insects and many other invertebrates, serving to receive and retain the spermatozoa..

Peristome :: Peristome (n.) The membrane surrounding the mouth of an invertebrate animal.

Radiata :: Radiata (n. pl.) An extensive artificial group of invertebrates, having all the parts arranged radially around the vertical axis of the body, and the various organs repeated symmetrically in each ray or spheromere..

Arm :: Arm (n.) A limb, or locomotive or prehensile organ, of an invertebrate animal..

Gizzard :: Gizzard (n.) A thick muscular stomach found in many invertebrate animals.

Mesoderm :: Mesoderm (n.) The middle body layer in some invertebrates.

Ommatidium :: Ommatidium (n.) One of the single eyes forming the compound eyes of crustaceans, insects, and other invertebrates..

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