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
There are four broad categories: physics, chemistry, biology, and social science, with a fairly liberal interpretation of what topics fall under each.
—
ArsTechnica, 1 May 2025
These also appear in the natural world in areas like biology, where they are employed to analyze possible folding patterns of RNA molecules.
—Andrew Paul, Popular Science, 1 May 2025
From his childhood in Jamaica to his career in marine biology, Harvey has dedicated his life to protecting the sea.
—Emily Lapointe, Outside Online, 28 Apr. 2025
Melting Magma Heat drives geology, the rocky foundation upon which everything else, from volcanic activity and atmospheric chemistry to biology, is built.
—Robin George Andrews, Quanta Magazine, 25 Apr. 2025
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ArsTechnica, 1 May 2025
These also appear in the natural world in areas like biology, where they are employed to analyze possible folding patterns of RNA molecules.
—Andrew Paul, Popular Science, 1 May 2025
From his childhood in Jamaica to his career in marine biology, Harvey has dedicated his life to protecting the sea.
—Emily Lapointe, Outside Online, 28 Apr. 2025
Melting Magma Heat drives geology, the rocky foundation upon which everything else, from volcanic activity and atmospheric chemistry to biology, is built.
—Robin George Andrews, Quanta Magazine, 25 Apr. 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 4 May. 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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