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mathematics
/ˌmæθəˈmætɪks/
noun
Learner's definition of MATHEMATICS
[noncount]
:
the science of numbers, quantities, and shapes and the relations between them

Algebra, arithmetic, calculus, geometry, and trigonometry are branches of mathematics.

She has a degree in mathematics.

a professor of mathematics

Mathematics is my favorite subject.
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often used before another noun