CMRR may stand for:
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Catskill Mountain Railroad
The Catskill Mountain Railroad is a heritage tourist railroad based in Kingston, New York, that began operations in 1982.
The railroad leases a 4.7-mile portion (MP 3.6 to MP 8.3) of the former New York Central Railroad Catskill Mountain br ...
, operators of the former New York Central Railroad Catskill Mountain Branch from Kingston to Phoenicia
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Central Massachusetts Railroad
The Central Massachusetts Railroad was a railroad in Massachusetts. The eastern terminus of the line was at North Cambridge Junction where it split off from the Middlesex Central Branch of the Boston and Lowell Railroad in North Cambridge and ...
, former railroad forming part of the Boston and Maine Railroad system
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Common-mode rejection ratio
In electronics, the common mode rejection ratio (CMRR) of a differential amplifier (or other device) is a metric used to quantify the ability of the device to reject common-mode signals, i.e. those that appear simultaneously and in-phase on both i ...
, measure of the capability of an instrument to reject a signal that is common to both input leads
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Chemistry and Metallurgy Research Replacement Facility
The Chemistry and Metallurgy Research Replacement Facility, usually referred to as the CMRR, is a facility under construction at Los Alamos National Laboratory in New Mexico which is part of the United States' nuclear stockpile stewardship program ...
, nuclear facility at Los Alamos National Laboratory
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