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
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The endeavor has had a far-reaching impact on biology, medicine and many other fields.
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Katie Hunt, CNN Money, 4 Oct. 2025
Mrigakshi Dixit Mrigakshi is a science journalist who enjoys writing about space exploration, biology, and technological innovations.
—Mrigakshi Dixit, Interesting Engineering, 3 Oct. 2025
Specialists on the front lines of the genomic revolution in biology are confident that such scaling will be possible, their conviction coming in part from past experience.
—IEEE Spectrum, 2 Oct. 2025
Her advocacy inspired generations and her research revolutionized the field of biology.
—Preston Fore, Fortune, 2 Oct. 2025
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Katie Hunt, CNN Money, 4 Oct. 2025
Mrigakshi Dixit Mrigakshi is a science journalist who enjoys writing about space exploration, biology, and technological innovations.
—Mrigakshi Dixit, Interesting Engineering, 3 Oct. 2025
Specialists on the front lines of the genomic revolution in biology are confident that such scaling will be possible, their conviction coming in part from past experience.
—IEEE Spectrum, 2 Oct. 2025
Her advocacy inspired generations and her research revolutionized the field of biology.
—Preston Fore, Fortune, 2 Oct. 2025
See All Example Sentences for biology
Cite this Entry
“Biology.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/biology. Accessed 8 Oct. 2025.
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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