biohazard
/ˈbajoʊˌhæzɚd/
noun
plural
biohazards
plural
biohazards
Learner's definition of BIOHAZARD
[count]
:
a biological or chemical substance or situation that is dangerous to human beings and the environment
— biohazardous
/ˌbajoʊˈhæzɚdəs/
adjective