Definition of Vertebra

Babylon English
vertebra
n. segments of bone which form the spinal column

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Vertebra definition was found in categories: Language, Idioms & Slang(3)  Arts & Humanities(1)  Medicine(1)  Entertainment & Music(1)  Encyclopedia(1)  

Vertebra Definition from Language, Idioms & Slang Dictionaries & Glossaries

Webster's Revised Unabridged Dictionary (1913)
Vertebra
(n.)
One of the serial segments of the spinal column.
  
(n.)
One of the central ossicles in each joint of the arms of an ophiuran.
  

WordNet 2.0
vertebra

Noun
1. one of the bony segments of the spinal column
(hypernym) bone, os
(hyponym) cervical vertebra, neck bone
(part-holonym) spinal column, vertebral column, spine, backbone, back, rachis
(part-meronym) centrum

hEnglish - advanced version
vertebra

vertebra
\ver"te*bra\ (?), n.; pl. vertebr? (#). [l. vertebra, fr. vertere to turn, change. see verse.]
1. (anat.) one of the serial segments of the spinal column.
note: in many fishes the vertebr? are simple cartilaginous disks or short cylinders, but in the higher vertebrates they are composed of many parts, and the vertebr? in different portions of the same column vary very greatly. a well-developed vertebra usually consists of a more or less cylindrical and solid body, or centrum, which is surmounted dorsally by an arch, leaving an opening which forms a part of the canal containing the spinal cord. from this dorsal, or neural, arch spring various processes, or apophyses, which have received special names: a dorsal, or neural, spine, spinous process, or neurapophysis, on the middle of the arch; two anterior and two posterior articular processes, or zygapophyses; and one or two transverse processes on each side. in those vertebr? which bear well-developed ribs, a tubercle near the end of the rib articulates at a tubercular facet on the transverse process (diapophysis), while the end, or head, of the rib articulates at a more ventral capitular facet which is sometimes developed into a second, or ventral, transverse process (parapophysis). in vertebrates with well-developed hind limbs, the spinal column is divided into five regions in each of which the vertebr? are specially designated: those vertebr? in front of, or anterior to, the first vertebra which bears ribs connected with the sternum are cervical; all those which bear ribs and are back of the cervicals are dorsal; the one or more directly supporting the pelvis are sacral and form the sacrum; those between the sacral and dorsal are lumbar; and all those back of the sacral are caudal, or coccygeal. in man there are seven cervical vertebr?, twelve dorsal, five lumbar, five sacral, and usually four, but sometimes five and rarely three, coccygeal.
2. (zo?l.) one of the central ossicles in each joint of the arms of an ophiuran.
vertebra
n : one of the bony segments of the spinal column


  similar words(6) 




 anticlinal vertebra 
 axis vertebra 
 vertebra dentata 
 thoracic vertebra 
 lumbar vertebra 
 dorsal vertebra 


Vertebra Definition from Arts & Humanities Dictionaries & Glossaries

JM Latin-English Dictionary
vertebra
N F
joint


Vertebra Definition from Medicine Dictionaries & Glossaries

Dictionary of Medicine (Shahram)
Vertebra
A vertebra is one of 33 bony segments that form the spinal column of humans. There are 7 cervical, 12 thoracic, 5 lumbar, 5 sacral (fused into one sacrum bone) and 4 coccygeal (fused into one coccyx bone).


Vertebra Definition from Entertainment & Music Dictionaries & Glossaries

English to Federation-Standard Golic Vulcan
Vertebra
plat-hinek


Vertebra Definition from Encyclopedia Dictionaries & Glossaries

Wikipedia English - The Free Encyclopedia
Vertebra
The Vertebral Column (singular: vertebra) are the individual irregular bones that make up the spinal column (aka ischis) — a flexuous and flexible column. There are normally thirty-three (33) vertebrae in humans, including the five that are fused to form the sacrum (the others are separated by intervertebral discs) and the four coccygeal bones which form the tailbone. The upper three regions comprise the remaining 24, and are grouped under the names cervical (7 vertebrae), thoracic (12 vertebrae) and lumbar (5 vertebrae), according to the regions they occupy. This number is sometimes increased by an additional vertebra in one region, or it may be diminished in one region, the deficiency often being supplied by an additional vertebra in another. The number of cervical vertebrae is, however, very rarely increased or diminished.

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