promotor

A full professor of a Dutch, Flemish, South African, or German university who acts as the principal supervisor of a student's doctoral research.
(alt-of, alternative) Alternative form of promoter.

catalyst accelerator

From promote + -or.

Oefen met het spreken en memoriseren van " promotor " en vele andere woorden en zinnen in Engels .

Toon populariteit in de loop van de tijd