What does AM stand for?

Attometer (10 E^-18, one quintillionth)

This definition appears very rarely and is found in the following Acronym Finder categories:

Science, medicine, engineering, etc.

Other Resources:

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Assembly Member Asset Management Assistant Manager Associate Member Associate of Music (degree) Aston Martin Asymmetric Multiplier (NIOSH) Asynchronous Mode Atlantic Microsystems (Bell Atlantic & Nynex Wireless Cable) Attacking Midfielder (soccer position)		Audit Manager Auricularis Muscle Authorized Messenger Auto Map Automated MICAP Automation Module Automod (defunct GameFAQs feature) Autoservizi Meridionali (charter bus company in Naples, Rome and Parma, Italy) Auxiliary Memory Auxiliary Module

Samples in periodicals archive:

I could do even better if Google allowed am as an abbreviation for attometer or fm as an abbreviation for femtometer.

Kickshaws

CLEO/QELS/PHAST PLENARY SPEAKERS David Reitze, professor of physics at the University of Florida, will present "The Laser Interferometer Gravitational-Wave Observatory: Probing the Dynamics of Space-Time with Attometer Precision" on Monday, May 5 about the detection of gravitational waves, which promises to open up a new astrophysical window to the universe.

Detecting Dangerous Chemicals with Lasers, Exploring the Brain's ...