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.

---

ischium British  

/ ˈɪskɪəm /

noun

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

---

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.

---

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

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

The three areas of each hip bone, the ilium, pubis, and ischium, converge centrally to form a deep, cup-shaped cavity called the acetabulum.

From Textbooks • Jun. 19, 2013

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

From Textbooks • Jun. 19, 2013

Many morphologists regard, the ilium as equivalent to, that is, strictly corresponding in its relation, to the scapula, the pubis to the cartilaginous substratum of the clavicle, and the ischium to the coracoid.

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