Definition of ischium in English:

Share this entry


Pronunciation: /ˈɪskɪəm/

noun (plural ischia /ˈɪskɪə/)

The curved bone forming the base of each half of the pelvis.
Example sentences
  • After further dissection, the surgeon exposes the pubic bone and identifies the ischium by palpation.
  • The inferior, posterior portion of the coxal bone is the ischium.
  • The pelvic component of the hip joint is called the acetabulum, which has contributions from the ischium, ilium and pubis.



Pronunciation: /ˈɪskɪəl/
Example sentences
  • The sacrotuberous ligament is a cartilaginous attachment of the sacrum to the ischial tuberosity.
  • Defect or nonunion of the pubic and ischial rami is occasionally observed.
  • In adolescent patients with a history of proximal hamstring injury and current ischial tenderness, a radiograph of the pelvis should be performed.


Early 17th century: from Latin, from Greek iskhion 'hip joint', later 'ischium'.

For editors and proofreaders

Line breaks: is|chium

Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.