Mantoux test n 1: tuberculin (a derivative of tubercle bacillus) is injected intradermally; a red area appearing 1-3 days later signifies an exposure (past or present) to tubercle bacilli and the need for further testing
Mantoux test \Mantoux test\ prop. n. (Med.) A skin test for hypersensitivity to tuberculin. It determines whether there is or has been any infection with tubercle bacilli. [WordNet 1.5]