tuberculosis

noun

tu·​ber·​cu·​lo·​sis tu̇-ˌbər-kyə-ˈlō-səs How to pronounce tuberculosis (audio)
tyu̇-
plural tuberculoses tu̇-ˌbər-kyə-ˈlō-ˌsēz How to pronounce tuberculosis (audio)
tyu̇-
: a highly variable communicable disease of humans and some other vertebrates that is caused by the tubercle bacillus and rarely in the U.S. by a related mycobacterium (Mycobacterium bovis), that affects especially the lungs but may spread to other areas (such as the kidney or spinal column), and that is characterized by fever, cough, difficulty in breathing, formation of tubercles, caseation, pleural effusions, and fibrosis

Examples of tuberculosis in a Sentence

Recent Examples on the Web
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Consider also tuberculosis, which globally accounts for the most deaths of any infectious disease. Omer Awan, Forbes, 12 Mar. 2025 The bill launched a program, known as the President’s Emergency Plan for AIDS Relief (PEPFAR), that allocated $15 billion for HIV, tuberculosis, and malaria prevention and treatment programs in low-income countries. Chantelle Lee, TIME, 12 Mar. 2025 At the same time, the U.S. is facing outbreaks of tuberculosis, a resurgence of measles among unvaccinated communities, and the worst flu season in 15 years. Katherine A. Foss, The Conversation, 11 Mar. 2025 Federal grants make up roughly two-thirds of its budget, funding efforts to detect avian flu and other infectious diseases, control HIV/AIDS and tuberculosis, and provide services for chronically ill children, the department said. Emily Alpert Reyes, Los Angeles Times, 27 Feb. 2025 See All Example Sentences for tuberculosis

Word History

Etymology

New Latin

First Known Use

1839, in the meaning defined above

Time Traveler
The first known use of tuberculosis was in 1839

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Cite this Entry

“Tuberculosis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tuberculosis. Accessed 19 Mar. 2025.

Kids Definition

tuberculosis

noun
tu·​ber·​cu·​lo·​sis t(y)u̇-ˌbər-kyə-ˈlō-səs How to pronounce tuberculosis (audio)
: a disease of human beings and some other vertebrates caused by a bacterium and usually marked by wasting, fever, and formation of cheesy tubercles that in human beings occur mostly in the lungs
tuberculous
t(y)u̇-ˈbər-kyə-ləs
adjective

Medical Definition

tuberculosis

noun
tu·​ber·​cu·​lo·​sis t(y)u̇-ˌbər-kyə-ˈlō-səs How to pronounce tuberculosis (audio)
plural tuberculoses -ˌsēz How to pronounce tuberculosis (audio)
: a usually chronic highly variable disease that is caused by a bacterium of the genus Mycobacterium (M. tuberculosis) and rarely in the United States by a related mycobacterium (M. bovis), is usually communicated by inhalation of the airborne causative agent, affects especially the lungs but may spread to other areas (as the kidney or spinal column) from local lesions or by way of the lymph or blood vessels, and is characterized by fever, cough, difficulty in breathing, inflammatory infiltrations, formation of tubercles, caseation, pleural effusion, and fibrosis

called also TB

More from Merriam-Webster on tuberculosis

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