-ktə(r) noun
( -s )
Etymology: Middle English instructour, from Middle French or Medieval Latin; Middle French instructeur, from Medieval Latin instructor, from Latin, arranger, preparer, from instructus (past participle of instruere to arrange, prepare, instruct) + -or
: one that instructs : teacher
our older brother was our instructor in woodcraft
an instructor in the local high school
specifically : a teacher in a college or university of a rank below any of the various grades of professor
most colleges recognize the following ascending order of ranks: instructor , assistant professor, associate professor, professor