ischium

American  

[is-kee-uhm] / ˈɪs ki əm /

noun

Anatomy.

ischia plural

1. the lower portion of either innominate bone.

2. either of the bones on which the body rests when sitting.

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ischium British  

/ ˈɪskɪəm /

noun

1. one of the three sections of the hipbone, situated below the ilium

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ischium Scientific  

/ ĭs′kē-əm /

ischia plural

1. The lowest of the three major bones that constitute each half of the pelvis, distinct at birth but later becoming fused with the ilium and pubis.

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Usage

What is ischial tuberosity? Ischial tuberosity is the name for the part of the pelvis that supports a person while sitting. How to pronounce ischial tuberosity[ is-kee-uhl too-buh-ros-i-tee ]

Other Word Forms

Derived Forms

• ischiatic
  adjective
• ischial
  adjective
• ischiadic
  adjective

Inflected Forms

noun

• ischia
  plural

Etymology

Origin of ischium

1640–50; < Latin < Greek ischíon hip-joint

Example Sentences

Its ischium, a pelvic bone, has a strong kink in it, compared to the more banana-like ischium from other fossils.

From Science Magazine • Jun. 20, 2024

In adults, the hip bones, or coxal bones, are formed by the fusion of three pairs of bones: the ilium, ischium, and pubis.

From Textbooks • Jun. 9, 2022

Growing layers of cartilage also form synchondroses that join together the ilium, ischium, and pubic portions of the hip bone during childhood and adolescence.

From Textbooks • Jun. 19, 2013

The ilium forms the large, fan-shaped superior portion, the ischium forms the posteroinferior portion, and the pubis forms the anteromedial portion.

From Textbooks • Jun. 19, 2013

There is some difference in the pubis and ischium which is more conspicuous in form than in direction of the bones.

From Dragons of the Air An Account of Extinct Flying Reptiles by Seeley, H. G.