pre·cep·to·ri·al I. \|prēˌsep|tōrēəl\adjective Etymology:preceptor + -ial 1.: of or relating to a preceptor < preceptorial duties > 2.: making use of preceptors < preceptorial system > II. noun (-s) : a class or course given at some colleges and universities for advanced students and emphasizing independent reading, informal discussion in small groups, and individual conferences with a teacher