coccyx

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coccyx

 [kok´siks]
the small bone caudad to the sacrum in humans, formed by the union of four (sometimes five or three) rudimentary vertebrae, and forming the caudal end of the vertebral column.

coc·cyx

, gen.

coc·cy·gis

, pl.

coc·cy·ges

(kok'siks, -si-jis, -si-jēs), [TA] Avoid the mispronunciations kok'iks and kos'iks.
The small bone at the end of the vertebral column in humans, formed by the fusion of four rudimentary vertebrae; it articulates above with the sacrum.
[G. kokkyx, a cuckoo, the coccyx]

coccyx

/coc·cyx/ (kok´siks) tail bone; the small bone caudal to the sacrum, formed by union of three to five rudimentary vertebrae, and forming the caudal extremity of the vertebral column.

coccyx

(kŏk′sĭks)
n. pl. coccyges (kŏk-sī′jēz, kŏk′sĭ-jēz′)
A small triangular bone at the base of the spinal column in humans and other apes, consisting of several fused rudimentary vertebrae. Also called tailbone.

coccyx

[kok′siks] pl. coccyges
Etymology: Gk, kokkyx, cuckoo's beak
the beaklike bone joined to the sacrum by a disk of fibrocartilage at the base of the vertebral column. It is formed by the union of three to five probably vestigial rudimentary vertebrae. The pieces of the coccyx fuse together in males at an earlier period in life than in females. In both the coccyx becomes fused with the sacrum by the sixth decade of life. The coccyx is freely movable on the sacrum during pregnancy. coccygeal [koksij′ē·əl] , adj.
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Coccyx

coc·cyx

, pl. coccyges (kok'siks, -si-jēz) [TA]
The small bone at the end of the vertebral column in humans, formed by the fusion of four rudimentary vertebrae; it articulates above with the sacrum.
[G. kokkyx, a cuckoo, the coccyx]

coccyx

The rudimentary tail bone, consisting of four small vertebrae fused together and joined to the curved SACRUM. From the resemblance of the bone to a cuckoo's beak.

coccyx

the fusion of the posterior vertebrae to form a single unit, the coccyx. In humans three to five vertebrae are involved and these form the remnant of a tail.

Coccyx

The last bone of the spinal column, consisting of three to five fused vertebrae that connect with the sacrum, a part of the pelvis.
Mentioned in: Coccyx Injuries
Figure 1: The brain viewed from the left showing the lobes of the cerebral hemisphere, the cerebellum and the lower parts of the brain stem in continuity with the spinal cord. Coloured area: the position of the ventricles, lying deep in the brain, containing cerebrospinal fluid and continuous with the central canal of the spinal cord.

coccyx

the last bone of the vertebral column. Composed of four or five rudimentary vertebrae, cartilaginous at birth, ossification and fusion not being complete until the age of 25-30. coccydynia pain in the region of the coccyx; in sport, usually the result of a fall. coccygeal adj. See Figure 1.

coccyx

; os coccygis base of the spine

coccyx

collection of fused coccygeal vertebrae found in humans and apes.