Tuberculin (noun)

A substance prepared from the bacteria that cause tuberculosis, used for diagnostic skin testing in humans and animals to detect infection with the bacteria.

Origin:

Early 19th century: from latin tuberculum (diminutive of tuber "swelling, lump") + -in1.

Examples:

1. The patient was given a tuberculin test to check for tuberculosis.
2. The tuberculin test was positive, indicating the presence of tuberculosis.
3. The cattle were given a tuberculin test to check for bovine tuberculosis.
4. The tuberculin test is a simple and effective way to detect tuberculosis.
5. The tuberculin test is widely used in the tuberculosis control programs.