Erudition (noun)

1. The quality of being well-educated, learned, or scholarly.
2. Extensive knowledge acquired through study and research.

Origin:

From the latin word eruditio, which means "education, learning".

Examples:

1. His erudition in the field was impressive.
2. Her erudition was evident in her writing.
3. The breadth of his erudition was impressive.
4. His erudition was evident in the depth of his knowledge.
5. Her erudition was demonstrated in her ability to cite specific examples and references.