ischium

American  

[is-kee-uhm] / ˈɪs ki əm /

noun

Anatomy.

plural

ischia

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 /

plural

ischia

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

• ischiadic adjective
• ischial adjective
• ischiatic adjective

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

The remains, according to the team, included parts of a humerus, a femur and the ischium, and vertebral elements of the neck and back.

From BBC

He was a little tender at the bottom of the bones you sit on, called the ischia.

From New York Times

This muscle connected the ischium to the gastralia - or “belly ribs” - of the dinosaurs who possessed them, pulling these bones backward to expand the abdomen.

From Scientific American

A hamstring is a group of muscles that extends down the back of an upper leg, from the ischium, just above the hip joint, to just below the knee.

From Los Angeles Times