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Dictionary · Word part

lei/o

A word root that means smooth.

LY-oh root

What it means

The root in words about smooth muscle. A leiomyoma is a benign tumor of smooth muscle, most often in the uterus, where it is called a fibroid; a leiomyosarcoma is a cancer of smooth muscle.

At a glance

Also writtenleio-

Related terms

smooth muscle

Muscle that works without conscious control and lines hollow organs such as the stomach, intestines, bladder, airways and blood vessels.

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