mammary

American

[mam-uh-ree] / ˈmæm ə ri /

adjective

Anatomy, Zoology.

of or relating to the mamma or breast.

mammary British

/ ˈmæmərɪ /

adjective

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

intermammary adjective
postmammary adjective
submammary adjective

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.

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

From BBC • Oct. 8, 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

But a few kinds of mammals, like our elephantine friends and our fellow primates, have arrangements of mammary tissue on the chest.

From Slate • Aug. 13, 2024

Researchers had discovered antibodies against H5N1 in a slice of a mammary gland.

From Salon • May 23, 2024

A similar, but stronger argument may be based upon the existence of teats, and even functional mammary glands in male mammals....

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

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023