1. extensive knowledge acquired by study; scholarly learning (plural form)
Usage: formal; often used to refer to multiple areas or types of scholarly knowledge

Examples

• The professor’s eruditions in classical literature and philosophy were widely recognized.
• His various eruditions made him a sought-after speaker at academic conferences.
• The library contained works reflecting the eruditions of many great scholars.
• She displayed her eruditions through thoughtful commentary on diverse subjects.
• The university celebrated the eruditions of its distinguished faculty members.
• Their combined eruditions created a comprehensive research team.