tuberculin
noun
tu·ber·cu·lin
tu̇-ˈbər-kyə-lən 
tyu̇-
: a sterile liquid containing the growth products of or specific substances extracted from the tubercle bacillus and used in intradermal skin tests (as the Mantoux test) for the diagnosis of tuberculosis
Examples of tuberculin in a Sentence
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The tuberculosis skin test requires an intradermal injection of liquid — 0.1 milliliter of a purified protein derivative called tuberculin — in the lower part of their arm, according to the Centers for Disease Control and Prevention.
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San Diego Union-Tribune, 30 Sep. 2019
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San Diego Union-Tribune, 30 Sep. 2019
Cite this Entry
“Tuberculin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tuberculin. Accessed 11 Nov. 2025.
Copy CitationKids Definition
tuberculin
noun
tu·ber·cu·lin
t(y)u̇-ˈbər-kyə-lən
: a sterile liquid that contains substances taken from the bacterium that causes tuberculosis and is used in the diagnosis of the disease
Medical Definition
tuberculin
noun
tu·ber·cu·lin
t(y)u̇-ˈbər-kyə-lən
: a sterile solution containing the growth products of or specific substances extracted from the tubercle bacillus and used in intradermal tests (such as the Mantoux test) for the diagnosis of tuberculosis see old tuberculin, purified protein derivative
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