Definition of biological
- her biological father
the rights of the biological father in this case
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'biological.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
: of or relating to biology or to life and living things
: related through birth
What made you want to look up biological? Please tell us where you read or heard it (including the quote, if possible).
to speak or write verbosely and windily
Get Word of the Day daily email!
Odd Habits and Quirks Quiz