Explore: Ppm

Look up PPM or ppm in Wiktionary, the free dictionary. PPM may refer to: Planned preventive maintenance Project portfolio management Public performance

no associated units of measurement. Commonly used are parts-per-million – ppm, 10−6 parts-per-billion – ppb, 10−9 parts-per-trillion – ppt, 10−12 parts-per-quadrillion

format (PBM) portable graymap format (PGM) portable pixmap format (PPM) PBM, PGM and PPM, sometimes collectively referred to as the portable anymap format

Prediction by partial matching (PPM) is an adaptive statistical data compression technique based on context modeling and prediction. PPM models use a set of previous

The Portable People Meter (PPM), also known as the Nielsen Meter, is a system developed by Arbitron (now Nielsen Audio) to measure how many people are

116 ppm Calgary, Alberta: 165 ppm[citation needed] Regina, Saskatchewan: 496 ppm Saskatoon, Saskatchewan: 160–180 ppm Winnipeg, Manitoba: 77 ppm Toronto

atmosphere at 428 parts per million (ppm), or about 0.043% (as of July 2025) having risen from pre-industrial levels of 280 ppm or about 0.028%. Burning fossil

The PPM Star Catalogue (Positions and Proper Motions Star Catalogue) is the successor of the SAO Catalogue. It contains precise positions and proper motions

AD – Democratic Alliance and also included the People's Monarchist Party (PPM). Marcelo Rebelo de Sousa led an attempt to establish a new Democratic Alliance

PPMS can refer to: Primary Progressive Multiple Sclerosis Pilgrim Park Middle School, Wisconsin PMMS This disambiguation page lists articles associated