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 vertebrate is as below...

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..

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

Skeleton :: Skeleton (n.) The bony and cartilaginous framework which supports the soft parts of a vertebrate animal.

Reptilia :: Reptilia (n. pl.) A class of air-breathing oviparous vertebrates, usually covered with scales or bony plates. The heart generally has two auricles and one ventricle. The development of the young is the same as that of birds..

Disk :: Disk (n.) The lower side of the body of some invertebrates, especially when used for locomotion, when it is often called a creeping disk..

Osteology :: Osteology (n.) The science which treats of the bones of the vertebrate skeleton.

Tooth :: Tooth (n.) One of the hard, bony appendages which are borne on the jaws, or on other bones in the walls of the mouth or pharynx of most vertebrates, and which usually aid in the prehension and mastication of food..

Pancreas :: Pancreas (n.) The sweetbread, a gland connected with the intestine of nearly all vertebrates. It is usually elongated and light-colored, and its secretion, called the pancreatic juice, is discharged, often together with the bile, into the upper part of the intestines, and is a powerful aid in digestion. See Illust. of Digestive apparatus..

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

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

Cirrostomi :: Cirrostomi (n. pl.) The lowest group of vertebrates; -- so called from the cirri around the mouth; the Leptocardia. See Amphioxus.

Air Bladder :: Air bladder () An air sac, sometimes double or variously lobed, in the visceral cavity of many fishes. It originates in the same way as the lungs of air-breathing vertebrates, and in the adult may retain a tubular connection with the pharynx or esophagus..

Amphioxus :: Amphioxus (n.) A fishlike creature (Amphioxus lanceolatus), two or three inches long, found in temperature seas; -- also called the lancelet. Its body is pointed at both ends. It is the lowest and most generalized of the vertebrates, having neither brain, skull, vertebrae, nor red blood. It forms the type of the group Acrania, Leptocardia, etc..

Bone :: Bone (n.) The hard, calcified tissue of the skeleton of vertebrate animals, consisting very largely of calcic carbonate, calcic phosphate, and gelatine; as, blood and bone..

Metanephros :: Metanephros (n.) The most posterior of the three pairs of embryonic renal organs developed in many vertebrates.

Hypoglossal :: Hypoglossal (a.) Under the tongue; -- applied esp., in the higher vertebrates, to the twelfth or last pair of cranial nerves, which are distributed to the base of the tongue..

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

Sternum :: Sternum (n.) A plate of cartilage, or a series of bony or cartilaginous plates or segments, in the median line of the pectoral skeleton of most vertebrates above fishes; the breastbone..

Ovipara :: Ovipara (n. pl.) An artifical division of vertebrates, including those that lay eggs; -- opposed to Vivipara..

Notochord :: Notochord (n.) An elastic cartilagelike rod which is developed beneath the medullary groove in the vertebrate embryo, and constitutes the primitive axial skeleton around which the centra of the vertebrae and the posterior part of the base of the skull are developed; the chorda dorsalis. See Illust. of Ectoderm..

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