Definition from Wiktionary, the free dictionary
From Ancient Greek ἄνθραξ (anthraks).
- (pathology) An acute infectious bacterial disease of herbivores, especially sheep and cattle. It can occur in humans through contact with infected animals, tissue from infected animals, or high concentrations of anthrax spores, but is not usually spread between humans. Symptoms include lesions on the skin or in the lungs, and it is often fatal.
Alternative forms 
- anthrax (an acute infectious bacterial disease of herbivores, especially sheep and cattle, which can occur in humans)