1. a set or group of four things
Usage: formal
2. in psychology, a symbol representing completeness or wholeness consisting of four elements
Usage: psychology; Jungian

Examples

• The ancient elements formed a quaternity of earth, air, fire, and water.
• Jung viewed the quaternity as a fundamental archetype in human psychology.
• The compass points create a natural quaternity of north, south, east, and west.
• In his analysis, the therapist identified a quaternity of core emotions.
• The quaternity of seasons governs the agricultural cycle.
• Medieval scholars often organized knowledge into quaternities for easier study.