1. worked or operated in a proper or particular way
Usage: past tense of function
2. served a particular purpose or role
Usage: past tense of function

Examples

• The old computer functioned perfectly for ten years.
• The bridge functioned as the main route between the two cities.
• Her heart functioned normally after the surgery.
• The committee functioned well under her leadership.
• The device functioned exactly as designed.
• The building functioned as both a school and community center.