The four expansions that matter
| Expansion | Field | Where you meet it | Wing |
|---|---|---|---|
| Revenue per mille | Publishing and advertising | AdSense, YouTube Studio, Mediavine, Ezoic dashboards | /revenue |
| Revolutions per minute | Engines, machines, physics | Tachometers, motor spec sheets, appliance labels | /machines |
| Remote patient monitoring | Healthcare | Clinic letters, Medicare billing, telehealth programs | /remote-patient-monitoring |
| RPM Package Manager | Linux | .rpm files, dnf and zypper commands, RHEL and Fedora docs | /red-hat-package-manager |
Revenue per mille
In a publisher dashboard, RPM is your earnings per 1,000 units of audience: per 1,000 pageviews in AdSense Page RPM Google AdSense Help2026-08, per 1,000 views in YouTube Studio YouTube Help2026-08. Mille is Latin for thousand. It is a seller-side metric: what you earned, after the platform's cut, not what an advertiser paid. If your context is a dashboard with a dollar sign, this is your RPM.
Revolutions per minute
The oldest and most common expansion: how many full rotations something completes in one minute. Car tachometers show it in thousands; ISO 80000-3 records rev/min as an accepted non-SI unit of rotational frequency ISO 80000-3 (space and time quantities)2026-08. Vinyl records made the numbers famous: 33 1/3, 45 and 78 rpm are playback speeds, the same unit as an engine turning 3,000 rpm on the motorway.
Remote patient monitoring
In healthcare, RPM is a care model, not a number: connected devices send readings such as blood pressure and blood glucose from a patient's home to a clinical team, as defined by HHS HHS telehealth.hhs.gov2026-08. Medicare reimburses it under dedicated CPT codes. A clinic letter using RPM means this one.
RPM Package Manager
In Linux, RPM is a recursive acronym: the RPM Package Manager, maintained at rpm.org rpm.org2026-08. It defines the .rpm package format used by Red Hat Enterprise Linux, Fedora and openSUSE. If your context is a terminal or a downloaded .rpm file, this is your RPM.
Minor and legacy expansions
- Rounds per minute: rate of fire for firearms. Same arithmetic shape as revolutions, different field.
- Revenue per member: an occasional subscription-business metric. Rare; most teams write ARPU instead.
- Rays per minute, RPM Records, RPM (motorsport series): proper nouns and niche uses you may meet in crosswords more often than in work.
How to tell which RPM a context means
- A dashboard with currency: revenue per mille. Start at the formula and the basis (page, session or impression).
- A dial, motor plate or spec sheet: revolutions per minute.
- A clinical or billing document: remote patient monitoring.
- A terminal, repo or file extension: the package manager.