Meaning and Usage
"循環" (じゅんかん) refers to the concept of circulation or a cycle where something moves or repeats in a loop. It is commonly used in scientific, economic, and environmental contexts.
Common Contexts
- Biological: blood circulation (血液の循環)
- Economic: economic cycles (経済の循環)
- Environmental/Industrial: recycling or circulating resources like water (水の循環)
Collocations and Patterns
- 循環する: to circulate or cycle
- 循環器: circulatory system (medical term)
- 循環型社会: a recycling-oriented society
Usage Notes
"循環" is a formal noun often used in written and technical language but also appears in everyday conversation when discussing cycles or circulation. It is not used for simple rotations like spinning an object; instead, it implies a process or system where elements move continuously.
Learners should not confuse "循環" with "回転" (rotation/spinning), which is more about physical turning rather than systemic cycles.