The term 'PAR' is an acronym for 'Playing Ability Rating' and is a numerical score assigned to a golf course. It is used to indicate the difficulty of a course, with higher numbers indicating a more difficult course. The PAR rating is determined by taking into account the length of the course, the number of hazards, and the type of terrain. The PAR rating is used to compare courses and to help golfers determine which courses are best suited for their skill level.