- the sickness resulting from eating food contaminated either by bacterial toxins or by certain bacteria, esp. salmonella, often causing vomiting, diarrhea, and prostration
- poisoning resulting from naturally poisonous foods, as certain mushrooms, or from chemical contaminants in food
- An acute, often severe gastrointestinal disorder characterized by vomiting and diarrhea and caused by eating food contaminated with bacteria, especially bacteria of the genus Salmonella, or the toxins they produce.
- Poisoning caused by ingesting substances, such as certain mushrooms, that contain natural toxins.