precursoryoudaoicibaDictYouDict
precursor: see course
precursor (n.)youdaoicibaDictYouDict
early 15c., from Middle French precurseur and directly from Latin praecursor "forerunner," agent noun from past participle stem of praecurrere, from prae "before" (see pre-) + currere "to run" (see current (adj.)). Related: Precursory.