Five features of emerging adults. As Arnett describes it, emerging adulthood can be defined as an: Age of identity exploration. Young people are deciding who they are and what they want out of work, school and love. Age of instability.
Definition of biohazard. : a biological agent or condition that is a hazard to humans or the environment; also : a hazard posed by such an agent or condition.
biohazard - hazard to humans or the environment resulting from biological agents or conditions. 1  health hazard - hazard to the health of those exposed to it. 2  agent - an active and efficient cause; capable of producing a certain effect; their research uncovered new disease agents.