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1. A biological agent, such as an infectious microorganism, or a condition that constitutes a threat to humans, especially in biological research or experimentation.
2. The potential danger, risk, or harm from exposure to such an agent or condition.
bi′o·haz′ard·ous (-ər-dəs) adj.
Etymology: Gk, bios, life; OFr, hasard
anything that is a risk to organisms, such as ionizing radiation or harmful bacteria or viruses.
biohazardA general term for pathogenic bacteria, viruses or other dangerous biologic agents, which may arise in clinical specimens or have been created by genetic recombination.
Contaminated or infective waste such as blood and body fluids.
Any material, substance, or item usually contaminated with transmissible pathogenic microorganisms (e.g., bacteria, viruses) that poses a risk to health.