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Medical Root

mast/o

breast

From Greek mastos, breast

Meaning

What does mast/o mean?

mast/o is a root meaning breast. It comes from Greek mastos, breast.

Inside words it is spelled mast.

Mastoid, the bone behind the ear, means breast-shaped; mast cells are unrelated (German Mast, fattening).

In real words

Medical words with mast/o

Sources

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Practice it

Female reproduction

mast/o is one of 13 parts in this lesson. Learn them together, then take real words apart.

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