MRU
MRU definition by Slang.net - The Slang Dictionary
This page explains what the acronym "MRU" means. The definition, example, and related terms listed above have been manually compiled and written by the Slang.net team.
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Techies use MRU to mean "most recently used." Most often, this acronym refers to the files on your computer that you've accessed most recently. For example, a system scanning program may allow you to sort your files by MRU or LRU (least recently used).
However, MRU may also refer to recently-accessed files stored on a portable hard drive or in the cloud, or other recently-used data. Occasionally (though rarely), you may even encounter MRU used in a non-technical context.