repeater 1 adj. and n. It applies to the one who repeats something. (inf.) Applies to the student who repeats the study of a course or subject for having been suspended in them. 2 n. Formerly and now in some universities, professor who repeats to the students the explanations of the titular professor. Teacher who helps students prepare classes for the university. 3 m. Telecommunications station that receives electromagnetic waves from another station and relays them amplified: TV repeater .