biohazard

bi·o·haz·ard  (b-hzrd)

n.

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.

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biohazard  (b-hzrd)

A biological agent, such as an infectious microorganism, that constitutes a threat to humans or to the environment, especially one produced in biological research or experimentation.

Thesaurus

Noun	1.	biohazard - hazard to humans or the environment resulting from biological agents or conditions health hazard - hazard to the health of those exposed to it
	2.	biohazard - any bacterium or virus or toxin that could be used in biological warfare biological agent agent - an active and efficient cause; capable of producing a certain effect; "their research uncovered new disease agents"