biological

US /ˌbaɪ.əˈlɑː.dʒɪ.kəl/
UK /ˌbaɪ.əˈlɑː.dʒɪ.kəl/
"biological" picture
1.

relating to biology or living organisms

:
The study focused on the biological diversity of the rainforest.
He is conducting research on biological processes.
2.

related by birth; genetically related

:
He is her biological father, not her adoptive one.
They share a strong biological connection.