1. the state or fact of being real or living
2. a way of living or being
3. continued survival or presence

Examples

• Scientists debate the existence of life on other planets.
• The old building has been in existence for over 200 years.
• She leads a quiet existence in the countryside.
• The company's existence depends on customer satisfaction.
• He questioned the existence of absolute truth.
• The harsh conditions made existence difficult for the settlers.
• Archaeological evidence proves the existence of ancient civilizations.