masto-

American  

1. a combining form meaning “breast,” used in the formation of compound words.

   mastopathy.

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masto- British  

combining form

1. indicating the breast, mammary glands, or something resembling a breast or nipple

   mastodon

   mastoid

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Usage

What does masto- mean? Masto- is a combining form used like a prefix meaning “breast.” It is often used in medical terms, especially in anatomy and pathology.Masto- comes from the Greek mastós, meaning “breast.” The Latin-based analog to masto- is mammo-, from mamma, meaning “breast.”What are variants of masto-?When combined with words or word elements that begin with a vowel, masto- becomes mast-, as in mastectomy.

Etymology

Origin of masto-

Combining form representing Greek mastós breast

Example Sentences

The group includes Democrat Catherine Cortez Masto from Nevada, where gambling has been regulated by the state for a century, and Republican John Curtis from Utah, where gambling is banned.

From Barron's

Sen. Cortez Masto, remains unhappy with the agency’s hands-off approach.

From Barron's

The group includes Democrat Catherine Cortez Masto from Nevada, where gambling has been regulated by the state for a century, and Republican John Curtis from Utah, where gambling is banned.

From Barron's

Sen. Cortez Masto, remains unhappy with the agency’s hands-off approach.

From Barron's

About 12 percent of the population of Maine, represented by Angus King, relies on SNAP; the same goes for 15 percent of Nevadans, who are represented by Cortez Masto and Rosen, and 15 percent of Illinoisans, represented by Durbin.

From Slate