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

• ischiadic
  adjective
• ischial
  adjective
• ischiatic
  adjective

Inflected Forms

Nouns

• ischia
  plural

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Etymology

Origin of ischium

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

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Example Sentences

See Examples For:

ischium ischia

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

The slightly curved posterior margin of the ischium above the ischial tuberosity is the lesser sciatic notch.

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

The posterior margin of the ischium has the shallow lesser sciatic notch and the ischial spine, which separates the greater and lesser sciatic notches.

From Textbooks ● Jun. 19, 2013

These two portions, pubis and ischium, limit an oval orifice, the subpubic foramen.

From Artistic Anatomy of Animals by ?douard Cuyer

The ailment results when friction causes inflammation of the bursae, or small, fluid-filled sacs, in places where tendons pass over the ischia, or hipbones.

From Time Magazine Archive

The anterior region of the crupper is thus much broader than that occupied by the ischia.

From Artistic Anatomy of Animals by ?douard Cuyer

In connection with the leaping habit, the ilia are greatly elongated, and the pubes and ischia much reduced.

From Text Book of Biology, Part 1: Vertebrata by H. G. (Herbert George) Wells

On the skeleton of the horse in the École des Beaux-Arts, the distance which separates the tuberosities of the ischia is 225 millimetres; that between the two spines of each iliac bone is 25 centimetres.

From Artistic Anatomy of Animals by ?douard Cuyer

The ischia of leprieurii, taurinus, and verrucigerus are moderately expanded; that of buckleyi is somewhat less expanded dorsally.

From A Synopsis of Neotropical Hylid Frogs, Genus Osteocephalus by William E. Duellman

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