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thymus

noun

thy·​mus ˈthī-məs How to pronounce thymus (audio)
variants or thymus gland
plural thymuses also thymi ˈthī-ˌmī How to pronounce thymus (audio)
: a glandular structure of largely lymphoid tissue that functions especially in cell-mediated immunity by being the site where T cells develop, is present in the young of most vertebrates typically in the upper anterior chest or at the base of the neck, and gradually decreases in size and activity after puberty

Example Sentences

Recent Examples on the Web Easton’s other condition prevented his thymus from functioning properly. NBC News, 8 Mar. 2022 But Easton’s thymus didn’t produce the very cells that would reject a transplanted organ. NBC News, 8 Mar. 2022 These are the thymus glands or pancreas of the animal — prized by many chefs for their mildness and, yes, sweetness. Amy Drew Thompson, orlandosentinel.com, 16 Sep. 2021 Sometimes lymphomas start in the thymus gland, another part of your immune system that's located in the chest. Barbara Brody, Health.com, 13 Sep. 2021 The thymus is one place where such cleverness leaves its trace. Dhruv Khullar, The New Yorker, 11 Aug. 2021 The thymus is one place where such cleverness leaves its trace. Dhruv Khullar, The New Yorker, 11 Aug. 2021 The thymus is one place where such cleverness leaves its trace. Dhruv Khullar, The New Yorker, 11 Aug. 2021 He was intubated for 10 days and underwent a battery of tests before doctors eventually found a fist-sized tumor on his thymus gland that had triggered his immune system, according to his parents, Todd and Sue Lang. S. Wayne Carter Jr., baltimoresun.com, 25 May 2021 See More

Word History

Etymology

New Latin, from Greek thymos warty excrescence, thymus

First Known Use

1578, in the meaning defined above

Time Traveler
The first known use of thymus was in 1578

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