MCRs

MCRs is an acronym that can refer to several different terms across fields. It is not a single standardized concept, but rather a set of distinct subjects depending on the context. The three commonly encountered meanings are MATLAB Compiler Runtime, Manufacturing Change Request, and the Marine Corps Reserve.

MATLAB Compiler Runtime (MCR) is a standalone run-time environment provided by MathWorks that enables the execution of applications compiled with MATLAB without requiring a full MATLAB installation. The MCR includes the libraries and runtime components necessary to run compiled MATLAB code on target machines. Different MATLAB releases correspond to different MCR versions, and applications compiled with a specific MATLAB version typically require the matching MCR version to run. The MCR is cross-platform, supporting major operating systems, and is widely used to distribute MATLAB-based tools to users who do not hold MATLAB licenses.

Manufacturing Change Request (MCR) is a formal document used in manufacturing, quality management, and regulated industries to propose, assess, and authorize changes to products, processes, or tooling. An MCR typically records the rationale for the change, expected impact, risks, validation requirements, and approval signatures. It serves as part of change-control procedures to maintain traceability, regulatory compliance, and consistent product quality. Depending on organizational practice, an MCR may be linked to broader change-control systems or quality management frameworks.

Marine Corps Reserve (MCR) refers to the reserve component of the United States Marine Corps. Members serve part-time, typically training regularly and maintaining readiness to support active-duty forces or respond to national emergencies. The MCR provides trained personnel, equipment, and capability to augment the active component as required, and its units may be mobilized for deployments or crises.

Other uses of the acronym MCR exist in various industries, though the three above are among the most commonly encountered.