Definition

A biological substance or condition that can be harmful to humans or the environment, often found in research or medical settings.

Example

The laboratory was sealed off due to a biohazard warning after the spill.

Conversation

Did you hear about that lab incident with the biohazard?

Yeah, I read it was pretty serious and they had to evacuate the area.

It's scary to think about how dangerous those biohazard materials can be.

Definitely, safety measures are so important in those environments.

Synonyms & Antonyms

Root Explanation

Biohazard → It is formed from "bio-" (from Greek "bios", meaning life) and "hazard" (from Old French "hasard", meaning chance or risk). The word "biohazard" refers to a risk or danger to life, particularly from biological substances.

Memory Tip

Think of 'bio' meaning 'life' and 'hazard' meaning 'risk' — so a biohazard is a risk to life.

Visually Confused Words