1. the position or office of a professor at a university or college
2. the period of time during which someone holds the position of professor

Examples

• She was offered a professorship at Harvard University.
• The professorship in medieval history became available after Dr. Smith retired.
• He spent his entire professorship researching climate change.
• The university created a new professorship in computer science.
• During her professorship, she published over fifty academic papers.
• The endowed professorship came with additional research funding.