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
And mutualism, as symbiotic cooperation is called in biology, is vital to life itself.
—
Matthew Wills, JSTOR Daily, 4 Feb. 2025
Early Education and the Continuation of Dr. Arendt's Career
Following his initial military and service work, Dr. Arendt began his educational career, earning a Bachelor of Science in biology from the University of California Los Angeles in 1973.
—Ethan Stone, USA TODAY, 1 Feb. 2025
Some fields are worse than others: biology and medicine are closer to 3 percent, and some subfields, such as cancer, may be much larger, Day said.
—Ars Technica, 31 Jan. 2025
Jonathan Richardson, a biology professor at the University of Richmond, decided to research urban rat trends after seeing media reports of rats taking over cities.
—Laura Paddison, CNN, 31 Jan. 2025
See all Example Sentences for biology 
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Matthew Wills, JSTOR Daily, 4 Feb. 2025
Early Education and the Continuation of Dr. Arendt's Career
Following his initial military and service work, Dr. Arendt began his educational career, earning a Bachelor of Science in biology from the University of California Los Angeles in 1973.
—Ethan Stone, USA TODAY, 1 Feb. 2025
Some fields are worse than others: biology and medicine are closer to 3 percent, and some subfields, such as cancer, may be much larger, Day said.
—Ars Technica, 31 Jan. 2025
Jonathan Richardson, a biology professor at the University of Richmond, decided to research urban rat trends after seeing media reports of rats taking over cities.
—Laura Paddison, CNN, 31 Jan. 2025
See all Example Sentences for biology
Dictionary Entries Near biology
Cite this Entry
“Biology.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/biology. Accessed 10 Feb. 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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