1. the defining parts of a definition; the words or phrases that explain what something means
Usage: technical; philosophy; logic

Examples

• In the definition ‘A triangle is a three-sided polygon,’ the phrase ‘three-sided polygon’ constitutes the definientia.
• The philosopher examined the definientia to ensure the definition was precise and complete.
• Students must identify both the definiendum and the definientia in each logical definition.
• The definientia should be clearer and more familiar than the term being defined.
• Circular definitions occur when the definientia contain the very term being defined.