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

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