[kok-siks] /ˈkɒk sɪks/
noun, plural coccyges
[kok-sahy-jeez, kok-si-jeez] /kɒkˈsaɪ dʒiz, ˈkɒk sɪˌdʒiz/ (Show IPA)
a small triangular bone forming the lower extremity of the spinal column in humans, consisting of four ankylosed rudimentary vertebrae.
a corresponding part in certain animals.
noun (pl) coccyges (kɒkˈsaɪdʒiːz)
a small triangular bone at the end of the spinal column in man and some apes, representing a vestigial tail
1610s, from Latin coccyx, from Greek kokkyx “cuckoo” (from kokku, like the bird’s English name echoic of its cry), so called by ancient Greek physician Galen because the bone in humans supposedly resembles a cuckoo’s beak.
coccygeal coc·cyg·e·al (kŏk-sĭj’ē-əl)
Relating to the coccyx.
coccyx coc·cyx (kŏk’sĭks)
n. pl. coc·cy·ges (kŏk-sī’jēz, kŏk’sĭ-jēz’)
The small triangular bone located at the base of the spinal column, formed by the fusion of four rudimentary vertebrae, and articulating above with the sacrum. Also called tailbone.
Plural coccyges (kŏk-sī’jēz, kŏk’sĭ-jēz’)
A small triangular bone at the base of the spine in humans and apes. It is composed of several fused vertebrae. Also called tailbone.
- Coccygeal body
coccygeal body n. An arteriovenous anastomosis supplied by the middle sacral artery and located on the pelvic surface of the coccyx.
- Coccygeal ganglion
coccygeal ganglion n. The lowest unpaired ganglion of the sympathetic nerve trunk. Also called ganglion impar.
- Coccygeal muscle
coccygeal muscle n. A muscle with origin in the spine of the ischium and sacrospinous ligament, with insertion to the sides of the lower part of the sacrum and the upper part of the coccyx, with nerve supply from the third and fourth sacral nerves, and whose action assists in raising and supporting the pelvic […]
- Coccygeal nerve
coccygeal nerve n. The lowest of the spinal nerves, entering into the formation of the coccygeal plexus.