germexpert
nounUK /ˈdʒɜːmˌɛkspɜːt/
US /ˈdʒɜːrmˌɛkspɜːrt/
A germ expert is a person who knows a lot about tiny germs.
The germ expert told us to wash our hands before eating.
OTHER MEANINGS
2. A scientist who studies how germs spread and make people sick.
The germ expert studied how the virus moved through the school.
3. Someone who gives advice on keeping places clean and free of germs.
The germ expert checked the kitchen to make sure it was safe.
4. A person who helps people learn how to stay healthy by fighting germs.
Our teacher invited a germ expert to talk about handwashing.