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Dictionary · Word part

aden/o

A word root that means gland.

AD-uh-noh root

What it means

The root in words about glands, the organs that make and release substances such as hormones, sweat or saliva. An adenoma is a growth made of gland tissue, adenocarcinoma is a cancer that starts in gland tissue, and adenopathy is swelling of glands, most often lymph nodes. The adenoids are lymph tissue at the back of the nose.

At a glance

Also writtenadeno-

Related terms

endocrine

Relating to the glands that release hormones straight into the blood, or to those hormones.

-oma

A word ending that means tumor or mass.

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