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PPM

'''PPM''' may refer to:
- In music:
    - ''Please Please Me'', the first album by The Beatles.
    - Peter, Paul, and Mary , a 1960's folk music trio.
- In computing:
    - Perl package manager, a packaging system for distributing precompiled modules for use with the Activestate binary distribution of the Perl programming language
    - Portable pixmap, a graphics file format
    - Prediction by Partial Matching, a compression algorithm used in computer science
    - IP traceback#Probabilistic packet marking|Probabilistic Packet Marking, an IP Traceback method
    - "Processor Power Management", an update of Advanced Configuration and Power Interface
    - Pulse-position modulation, a form of data transmission
- In media:
    - Portable People Meter, created by Arbitron to measure radio broadcast audiences
    - Peter, Paul and Mary, a folk music group of the 1960s
- In science:
    - Proton precession magnetometer, which measures the strength and/or direction of a magnetic field by measuring the resonance frequency of protons (hydrogen nuclei) in the magnetic field
    - Parts per million, a way of quantifying small concentrations, usually mass.
    - *Chemical shift, parts per million applied to frequencies, for use in NMR.
    - PPM Star Catalogue An astrometric catalogue of 378,910 stars
    - In medicine:
    - *Permanent pacemaker or artificial pacemaker
    - *Persistent pupillary membrane, a condition in the eye
- In audio:
    - Peak programme meter, a type of audio level meter
- In management:
    - Product Portfolio Management, an aspect of Product Management
    - Project Portfolio Management, management of a set of programmes as a single portfolio
- Pages per minute, a measure of speed often used to market printers or photocopiers
- Parry People Movers, a British company manufacturing lightweight railbuses
- People's Monarchist Party|Partido Popular Monárquico (People's Monarchist Party), Portuguese political party
- Persekutuan Pengakap Malaysia, the Scouts Association of Malaysia
- Planned Preventative Maintenance, a schedule/program for building maintenance
- In finance:
    - Private Placement Memorandum, the initial offering document for a private placement
- In radio technology:
    - Pulse-position modulation, a form of signal modulation

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