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mammary

American  
[mam-uh-ree] / ˈmæm ə ri /

adjective

Anatomy, Zoology.
  1. of or relating to the mamma or breast.


mammary British  
/ ˈmæmərɪ /

adjective

  1. of, relating to, or like a mamma or breast

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of mammary

First recorded in 1675–85; mamm(a) 2 + -ary

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

The outbreak first emerged in dairy cattle in the Texas Panhandle, where animals developed severe cases of necrotizing mastitis, a painful inflammatory disease that damages tissue in the mammary glands.

From Science Daily Jun. 23, 2026

The EU has already defined dairy items as products coming from the "normal mammary secretion".

From BBC Oct. 8, 2025

They don't need to: the pups will happily take turns being nursed from the same mammary gland, and this devoted and well-cared-for mother spends plenty of time with each of her many, many beloved children.

From Salon May 11, 2025

“The reason is because Holsteins produce more milk. So they have more volume for the virus to enjoy,” she said, noting research showing the virus’ affinity for mammary tissue.

From Los Angeles Times Oct. 20, 2024

There can be little doubt that the mammary gland was as apparently useless in the remotest male mammalian ancestor of man as in living men, and yet it has not disappeared.

From The Old Riddle and the Newest Answer by Gerard, John S.J.

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