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
The biology behind that calm is well documented.
—
Samantha Agate, Sacbee.com, 9 June 2026
Some researchers have proposed that the drugs also may influence the biology of aging, though direct evidence in humans has remained limited.
—Ashley MacKin Solomon, San Diego Union-Tribune, 9 June 2026
The company said the broad release is possible because of new safeguards that block responses in specific high-risk areas, including cybersecurity and biology.
—Ashley Capoot, CNBC, 9 June 2026
Their biology is dictated by their human overseers, who prioritize efficiency over quality of life.
—Jacqueline Goldblatt, PC Magazine, 8 June 2026
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Samantha Agate, Sacbee.com, 9 June 2026
Some researchers have proposed that the drugs also may influence the biology of aging, though direct evidence in humans has remained limited.
—Ashley MacKin Solomon, San Diego Union-Tribune, 9 June 2026
The company said the broad release is possible because of new safeguards that block responses in specific high-risk areas, including cybersecurity and biology.
—Ashley Capoot, CNBC, 9 June 2026
Their biology is dictated by their human overseers, who prioritize efficiency over quality of life.
—Jacqueline Goldblatt, PC Magazine, 8 June 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 14 Jun. 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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