Longman Dictionary of Contemporary English homepage

biological

 adjective
     
Related topics: Biology
bi‧o‧lo‧gi‧cal
1 relating to the natural processes performed by living things:
the biological functions of the body
Depression is both biological and psychological.
2

biological weapons/warfare/attack etc

weapons, attacks etc that involve the use of living things, including bacteria, to harm other living things:
a ban on chemical and biological weapons
3HB [only before noun] relating to biology:
the biological sciences
4

biological parent/father/mother etc

a child's parent through birth, rather than through adoption
—biologically adverb
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

Dictionary pictures of the day
Do you know what each of these is called?
What is the word for picture 1? What is the word for picture 2? What is the word for picture 3? What is the word for picture 4?
Click on any of the pictures above to find out what it is called.

Explore our topic dictionary

Browse the dictionary