biology
noun
bi·ol·o·gy
bī-ˈä-lə-jē 
1
: a branch of knowledge that deals with living organisms and vital processes
advances in the field of biology
a biology textbook
2
a
: the plant and animal life of a region or environment
the biology of the rainforest
b
: the life processes especially of an organism or group
the biology of cancer cells
broadly
: ecology
Examples of biology in a Sentence
advances in the field of biology
the biology of the rain forest
the biology of tumor cells
Recent Examples on the Web
Caballero is taking communications and geography courses this year and will take biology, biotechnology, English and statistics as a senior.
—
Lou Ponsi, Oc Register, 10 Apr. 2026
The worms, a species called Caenorhabditis elegans, are tiny creatures about 1 millimeter long that are commonly found in soil and have been used in biology research for decades.
—Tereza Pultarova, Space.com, 9 Apr. 2026
The question of whether AI can help people with limited biology training carry out dangerous lab work is the subject of active research.
—Stephen D. Turner, The Conversation, 9 Apr. 2026
This will give scientists, policymakers and industry answers as to which microplastics must be addressed most pressingly through pharmaceutical biology and bioremediation science.
—Kate Nishimura, Footwear News, 7 Apr. 2026
See All Example Sentences for biology
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Lou Ponsi, Oc Register, 10 Apr. 2026
The worms, a species called Caenorhabditis elegans, are tiny creatures about 1 millimeter long that are commonly found in soil and have been used in biology research for decades.
—Tereza Pultarova, Space.com, 9 Apr. 2026
The question of whether AI can help people with limited biology training carry out dangerous lab work is the subject of active research.
—Stephen D. Turner, The Conversation, 9 Apr. 2026
This will give scientists, policymakers and industry answers as to which microplastics must be addressed most pressingly through pharmaceutical biology and bioremediation science.
—Kate Nishimura, Footwear News, 7 Apr. 2026
See All Example Sentences for biology
Cite this Entry
“Biology.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/biology. Accessed 15 Apr. 2026.
Copy CitationKids Definition
biology
noun
bi·ol·o·gy
bī-ˈäl-ə-jē
1
: a branch of knowledge that deals with living organisms and life processes
2
a
: the plant and animal life of a region or environment
b
: the life processes of an organism or group
Etymology
from German Biologie "biology," derived from Greek bi-, bio- "life" and -logia "study, science"
Medical Definition
biology
noun
bi·ol·o·gy
-jē
plural biologies
1
: a branch of science that deals with living organisms and vital processes
2
a
: the plant and animal life of a region or environment
b
: the laws and phenomena relating to an organism or group
3
: a treatise on biology
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