1. divisions into three parts, categories, or classes
Usage: formal; academic

Examples

• The philosopher examined various trichotomies in human nature.
• Political scientists often study trichotomies between different ideological positions.
• The research revealed interesting trichotomies in consumer behavior patterns.
• Ancient Greek thought frequently employed trichotomies to categorize knowledge.
• The textbook outlined several trichotomies used in psychological theory.
• Sociologists identified trichotomies within the class structure of modern society.