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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:

Although these results come from laboratory-grown tissue and require further testing, they point to a possible treatment strategy for both feline mammary cancer and human breast cancer3.

From Science Daily Mar. 18, 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

It must at present suffice to point out that, in addition to mammary glands, the creatures have hot blood, and the body bears more or less hair—at least at some time of life.

From The Contemporary Review, Volume 36, September 1879 by Various

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