a person having a high level of knowledge or skill in a particular subject
He is the administration’s foreign-policy expert for eastern Europe.
The computer programmer was recognized as an expert in coding and software development.
The medical team consulted with an expert in infectious diseases to address the unique challenges of the outbreak.
The lawyer acted as an expert witness, providing specialized knowledge during the trial.
The gardening expert shared tips on cultivating a thriving garden during the community workshop.
