a risk or danger to life or health, esp. that resulting from biological experimentation
Origin of biohazardbio- + hazard
having to do with biohazards, esp. their prevention or control
- A biological agent, such as an infectious microorganism, or a condition that constitutes a threat to humans, especially in biological research or experimentation.
- The potential danger, risk, or harm from exposure to such an agent or condition.
bio- + hazard