Meaning of RPM in English

RPM

also r.p.m.

~ is used to indicate the speed of something by saying how many times per minute it will go round in a circle. ~ is an abbreviation for ‘revolutions per minute’.

Both engines were running at 2500 ~.

Collins COBUILD.      Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) .