Acronyms, Abbreviations, and Initialisms.
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The meaning of the Acronym PIR is...

PIR is

Problem Identification Report
Priority Information Requirement
Priority Intelligence Requirements
Primary Image Record
Passive Infra Red
Pass In Review
Post Implementation Review
Para Infantry Regiment

More Meanings For PIR:

Processor Information ROM
Priority Information Report
Parents In Room
Periodic Interest Rate
Protein Information Resource
Pier 1 Imports, Inc.
Pile Installation Recorder
Problem Identification Report
Priority Information Requirement
Priority Intelligence Requirements
Primary Image Record
Passive Infra Red
Pass In Review
Post Implementation Review
Para Infantry Regiment

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