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 vertebra is as below...

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

Opisthomi :: Opisthomi (n. pl.) An order of eellike fishes having the scapular arch attached to the vertebrae, but not connected with the skull..

Ocellus :: Ocellus (n.) A little eye; a minute simple eye found in many invertebrates.

Axis :: Axis (n.) Also used of the body only of the vertebra, which is prolonged anteriorly within the foramen of the first vertebra or atlas, so as to form the odontoid process or peg which serves as a pivot for the atlas and head to turn upon..

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..

Vertebrate :: Vertebrate (n.) One of the Vertebrata.

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..

Biconcave :: Biconcave (a.) Concave on both sides; as, biconcave vertebrae..

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..

Acrania :: Acrania (n.) The lowest group of Vertebrata, including the amphioxus, in which no skull exists..

Vertebro- :: Vertebro- () A combining form used in anatomy to indicate connection with, or relation to, a vertebra, vertebrae, or vertebral column; as in vertebrocostal..

Osteocomma :: Osteocomma (n.) A metamere of the vertebrate skeleton; an osteomere; a vertebra.

Tongue :: Tongue (n.) an organ situated in the floor of the mouth of most vertebrates and connected with the hyoid arch.

Osteozoa :: Osteozoa (n. pl.) Same as Vertebrata.

Pleurapophysis :: Pleurapophysis (n.) One of the ventral processes of a vertebra, or the dorsal element in each half of a hemal arch, forming, or corresponding to, a vertebral rib..

Vertebrata :: Vertebrata (n. pl.) One of the grand divisions of the animal kingdom, comprising all animals that have a backbone composed of bony or cartilaginous vertebrae, together with Amphioxus in which the backbone is represented by a simple undivided notochord. The Vertebrata always have a dorsal, or neural, cavity above the notochord or backbone, and a ventral, or visceral, cavity below it. The subdivisions or classes of Vertebrata are Mammalia, Aves, Reptilia, Amphibia, Pisces, Marsipobranchia, and Lep

Vertebral :: Vertebral (n.) A vertebrate.

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..

Pygostyle :: Pygostyle (n.) The plate of bone which forms the posterior end of the vertebral column in most birds; the plowshare bone; the vomer. It is formed by the union of a number of the last caudal vertebrae, and supports the uropigium..

Ichthyopsida :: Ichthyopsida (n. pl.) A grand division of the Vertebrata, including the Amphibia and Fishes..

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