Definition

Relating to or involving a risk to human health or the environment due to biological substances.

Example

The laboratory must follow strict safety protocols when handling biohazardous materials.

Conversation

Did you hear about the new lab they built downtown?

Yeah, I heard it deals with biohazardous materials!

That's pretty intense; I hope they have strict safety measures in place.

For sure, I wouldn't want to be near anything biohazardous without protection!

Synonyms & Antonyms

Root Explanation

Biohazardous → It is formed from "bio-" (from Greek "bios", meaning life) and "hazard" (from Old French "hasard", meaning chance or risk). The word "biohazardous" refers to a risk or danger that is related to living organisms or biological substances.

Memory Tip

Think of 'life' ('bio-') being associated with 'risk' ('hazard') — that's why biohazardous means something that poses a risk to life.

Visually Confused Words