ppm

1. abbreviationinitialismInitialism of parts per million (10000 ppm = 1%).

   The overflush consisted of 100 bbls of uncrosslinked 3000 ppm polymer, followed by one wellbore volume (~150 bbls) plus 450 bbls crude behind pipe.

   1995, Proceedings, International Meeting on Petroleum Engineering, page 63

   1 more example

   PIRG noted the European Union has a limit of 300 ppm for boron and that there should be a “full-fledged investigation to determine if limits should be established” in the US.

   2018 November 20, Wayne Drash, “Consumer group warns of ‘dangerous’ slime products and other hazardous toys”, in CNN, archived from the original on 26 Oct 2022

   Synonyms: μU, microuno

2. abbreviationinitialismInitialism of page(s) per minute.

plural PPMs

1. abbreviationcountableinitialismuncountableInitialism of pulse position modulation.
2. abbreviationcountableinitialismuncountableInitialism of process production model.
3. abbreviationcountableinitialismuncountableInitialism of power-performance management.
4. abbreviationcountableinitialismuncountableInitialism of prediction by partial match.

alternative ppm

1. abbreviationinitialismInitialism of page per minute.