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Medical Root

onc/o

tumor

From Greek onkos, mass, bulk, lump

Meaning

What does onc/o mean?

onc/o is a root meaning tumor. It comes from Greek onkos, mass, bulk, lump.

Inside words it is spelled onc.

Onc/o literally means a mass or tumor, benign or malignant, but oncology in practice is the care of people with cancer.

In real words

Medical words with onc/o

Don't mix it up

Parts easily confused with onc/o

In the dictionary

More terms built with it

Terms in our life science dictionary that list onc/o among their word parts.

Sources

Checked against

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Practice it

Cells, tissues and the body

onc/o is one of 14 parts in this lesson. Learn them together, then take real words apart.

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