theory
Definition
- n. a well-substantiated explanation of some aspect of the natural world; an organized system of accepted knowledge that applies in a variety of circumstances to explain a specific set of phenomena
- n. a belief that can guide behavior
Word forms
- Plural
- theories
Example sentences
n.
Her theory about the causes of climate change is widely discussed in scientific circles.
n.
In chemistry, the theory of evolution helps explain how species adapt over time.