coccyx

noun
coc·​cyx | \ ˈkäk-siks How to pronounce coccyx (audio) \
plural coccyges\ ˈkäk-​sə-​ˌjēz How to pronounce coccyges (audio) \ also coccyxes\ ˈkäk-​sik-​səz How to pronounce coccyxes (audio) \

Definition of coccyx

: a small bone that articulates with the sacrum and that usually consists of four fused vertebrae which form the terminus of the spinal column in humans and tailless apes

Examples of coccyx in a Sentence

Recent Examples on the Web And piano-key spines extend from the neck to the coccyx with the ribs flourishing outwards, but often without individual vertebrae, appearing just as a single wobbly line running down the back. Jack Hartnell, Time, "The Medieval History Behind Our Halloween Fascination With Skeletons," 30 Oct. 2019 When necessary, treatment for chronic tailbone pain may include instruction in pelvic floor relaxation techniques; physical therapy; or manipulation of the coccyx, which is usually performed through the rectum. Mayo Clinic, chicagotribune.com, "Tailbone pain often goes away without medical treatment," 19 Aug. 2019 Your tailbone, or coccyx, is the bony structure at the bottom of your spine that helps support your pelvic floor. Mayo Clinic, chicagotribune.com, "Tailbone pain often goes away without medical treatment," 19 Aug. 2019 The suspension keeps the driver in touch with the road while protecting the coccyx from too many bumps and bruises. John Scott Lewinski, Ars Technica, "A 5-liter V8 in a world of small-capacity turbos: The 2018 Lexus GS F," 8 Apr. 2018 Ab rotation The human spine is composed of five sections: cervical, thoracic, lumbar, sacrum and coccyx. Philly.com, "5 easy exercises you can do from your chair," 27 Mar. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'coccyx.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of coccyx

1615, in the meaning defined above

History and Etymology for coccyx

New Latin, from Greek kokkyx cuckoo, coccyx; from its resemblance to a cuckoo's beak

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Time Traveler for coccyx

Time Traveler

The first known use of coccyx was in 1615

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Cite this Entry

“Coccyx.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/coccyx. Accessed 27 May. 2020.

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More Definitions for coccyx

coccyx

noun
How to pronounce coccyx (audio)

English Language Learners Definition of coccyx

technical : the small bone at the end of the spine

coccyx

noun
coc·​cyx | \ ˈkäk-siks How to pronounce coccyx (audio) \
plural coccyges\ ˈkäk-​sə-​ˌjēz How to pronounce coccyges (audio) \ also coccyxes\ ˈkäk-​sik-​səz How to pronounce coccyxes (audio) \

Medical Definition of coccyx

: a small bone that articulates with the sacrum and that usually consists of four fused vertebrae which form the terminus of the spinal column

More from Merriam-Webster on coccyx

Britannica.com: Encyclopedia article about coccyx

Comments on coccyx

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