Entry 1 sense Webster, 1913 Premonitory /prəm-ŭn'-ət-ẽr-ē/ · Pre·mon·i·to·ry · IPA /pɹəˈmɑnɪˌtɔɹi/ 01 a. Giving previous warning or notice; as, premonitory symptoms of disease. 1. Giving previous warning or notice; as, premonitory symptoms of disease.