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ilium

The large, wing-shaped upper part of each hip bone.

IL-ee-um noun

What it means

The top edge of the ilium, the iliac crest, is the bony ridge felt at the side of the waist. The ventrogluteal injection site is found using the iliac crest, and bone marrow samples are often taken from the back of the ilium.

Remember it

IlIum, with an I, is in the hIp; ilEum, with an E, is in the Eating tract.

At a glance

Spanishilion
Also writtenilia

Easy to confuse with

ileum

The last and longest part of the small intestine, which joins the large intestine.

Related terms

bone marrow

The soft, spongy tissue inside bones that makes blood cells.

pelvic

Having to do with the pelvis, the bowl-shaped ring of bones at the base of the spine, or the organs inside it.

intramuscular injection

An injection that puts medicine deep into a muscle.

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