coccyx
coc·cyx / ˈkäksiks/ • n. (pl. coc·cy·ges / ˈkäksəˌjēz/ or coc·cyx·es / ˈkäksiksiz/ ) a small, triangular bone at the base of the spinal column in humans and some apes, formed of fused vestigial vertebrae.DERIVATIVES: coc·cyg·e·al / käkˈsijēəl/ adj.
coccyx
coccyx (kok-siks) n. (pl. coccyges or coccyxes) the lowermost element of the backbone: the vestigial human tail. It consists of four rudimentary coccygeal vertebrae fused to form a triangular bone that articulates with the sacrum. See also vertebra.
—coccygeal (kok-sij-iăl) adj.
—coccygeal (kok-sij-iăl) adj.
coccyx
coccyx The last bone in the vertebral column in apes and humans (i.e. tailless primates). It is formed by the fusion of 3–5 caudal vertebrae.
coccyx
coccyx (anat.) terminal bone of the spinal column. XVII. — L. — Gr. kókkux CUCKOO (the bone being supposed to resemble a cuckoo's bill).
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coccyx