English

Definition of p.s.i. abbreviation from the Oxford Advanced Learner's Dictionary

 

p.s.i.

 abbreviation
abbreviation
BrE BrE//ˌpiː es ˈaɪ//
 
; NAmE NAmE//ˌpiː es ˈaɪ//
 
 
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pounds per square inch (used for giving the pressure of tyres, etc.)
See the Oxford Advanced American Dictionary entry: p.s.i.

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