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...

Keratose :: Keratose (n.) A tough, horny animal substance entering into the composition of the skeleton of sponges, and other invertebrates; -- called also keratode..

Retinophora :: Retinophora (n.) One of group of two to four united cells which occupy the axial part of the ocelli, or ommatidia, of the eyes of invertebrates, and contain the terminal nerve fibrillae. See Illust. under Ommatidium..

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..

Uterus :: Uterus (n.) A receptacle, or pouch, connected with the oviducts of many invertebrates in which the eggs are retained until they hatch or until the embryos develop more or less. See Illust. of Hermaphrodite in Append..

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

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

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

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

Brain :: Brain (n.) The anterior or cephalic ganglion in insects and other invertebrates.

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..

Skeleton :: Skeleton (n.) The more or less firm or hardened framework of an invertebrate animal.

Neuropodous :: Neuropodous (a.) Having the limbs on, or directed toward, the neural side, as in most invertebrates; -- opposed to haemapodous..

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..

Corneule :: Corneule (n.) One of the corneas of a compound eye in the invertebrates.

Eye :: Eye (n.) The organ of sight or vision. In man, and the vertebrates generally, it is properly the movable ball or globe in the orbit, but the term often includes the adjacent parts. In most invertebrates the years are immovable ocelli, or compound eyes made up of numerous ocelli. See Ocellus..

Myohaematin :: Myohaematin (n.) A red-colored respiratory pigment found associated with hemoglobin in the muscle tissue of a large number of animals, both vertebrate and invertebrate..

Sporozoa :: Sporosac (n.) An early or simple larval stage of trematode worms and some other invertebrates, which is capable or reproducing other germs by asexual generation; a nurse; a redia..

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

Beak :: Beak (n.) The long projecting sucking mouth of some insects, and other invertebrates, as in the Hemiptera..

Eye-spot :: Eye-spot (n.) A simple visual organ found in many invertebrates, consisting of pigment cells covering a sensory nerve termination..

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