1. branches of philosophy that deal with the nature of being or existence
Usage: philosophy
2. formal representations of knowledge within specific domains, showing relationships between concepts
Usage: computer science; information technology

Examples

• The philosophy professor taught different ontologies throughout history.
• Ancient Greek ontologies explored fundamental questions about reality.
• Computer scientists develop ontologies to organize medical knowledge.
• The database uses multiple ontologies to classify biological data.
• Semantic web technologies rely on shared ontologies.
• Researchers compared various ontologies for artificial intelligence systems.