trichotomy
/traɪˈkɑtəmi/
noun
- A division or classification into three distinct parts, groups, or categories.
- The classic trichotomy of government is legislative, executive, and judicial branches.
- In biology, the trichotomy of domains divides life into bacteria, archaea, and eukarya.
- The psychologist proposed a trichotomy of human needs: physical, social, and spiritual.
Antonyms