PIR

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See also: pir and pîr

English[edit]

Noun[edit]

PIR (plural PIRs)

  1. (countable, aviation, travel) Initialism of property irregularity report: a form to be filled in when baggage is lost by an airline.
  2. (uncountable) Initialism of passive infrared.
  3. (chemistry) Abbreviation of polyisocyanurate.

Anagrams[edit]