mammary gland

noun

: any of the large compound modified sebaceous glands that in female mammals are modified to secrete milk, are situated ventrally in pairs, and usually terminate in a nipple

Example Sentences

Recent Examples on the Web During a routine, two-day visit in August of that year, inspectors noted that one female beagle had an orange-sized mass on her mammary gland. Lizzie Johnson, Anchorage Daily News, 17 Oct. 2022 Dolly, named after Tennessee’s own Dolly Parton, was a Finnish Dorset sheep cloned from a single, adult mammary gland cell. Bill Frist, Forbes, 2 Aug. 2022 The team’s method involved removing the nucleus from a Scottish Blackface sheep’s egg cell and electroshocking it with a mammary gland cell from a Finn Dorset sheep to enable the two to fuse. Rachel Nuwer, Smithsonian Magazine, 23 May 2022 In 1996, researchers at the Roslin Institute cloned a cell taken from the mammary gland of a 6-year-old Finn Dorset sheep and an egg cell taken from a Scottish blackface sheep, and the result was Dolly. Washington Post, 21 May 2021 This work is from observational studies in people and the ability of these chemicals to cause mammary gland tumors in animal studies. Linda S. Birnbaum And Margaret L. Kripke, STAT, 21 Nov. 2020 Mammals are a class of animals so named because their young are kept alive with milk produced by the mammary glands of the females. James P. Dewan, chicagotribune.com, 21 Aug. 2019 Years later, after her recovery, Ramsdell decided to leave the heart behind and to start looking for asymmetry in the mammary glands of mammals. Tim Vernimmen, Quanta Magazine, 31 Jan. 2017 But her initial studies of mice proved disappointing — their left and right mammary glands didn’t seem to differ at all. Tim Vernimmen, Quanta Magazine, 31 Jan. 2017 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'mammary gland.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History

First Known Use

1826, in the meaning defined above

Time Traveler
The first known use of mammary gland was in 1826

Dictionary Entries Near mammary gland

Cite this Entry

“Mammary gland.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mammary%20gland. Accessed 8 Dec. 2022.

Kids Definition

mammary gland

noun
: one of the large glands that in female mammals produce milk and in males are usually underdeveloped, are located in pairs on the abdominal side of the animal body, and usually end in a nipple

Medical Definition

mammary gland

noun
: any of the large compound sebaceous glands that in female mammals are modified to secrete milk, are situated ventrally in pairs, and usually terminate in a nipple

More from Merriam-Webster on mammary gland

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