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Etymology 1[edit]



EPR (plural EPRs)

  1. (aviation) Initialism of engine pressure ratio (the ratio of pressure between exhaust and inlet of a jet engine).
  2. (finance) Initialism of expected profit rate.
  3. (physics) Initialism of European Pressurised Reactor, a type of nuclear reactor.

Etymology 2[edit]

From the initials of the three theoreticians to conceived of the paradox, Einstein (Albert Einstein), Podolsky (Boris Podolsky), Rosen (Nathan Rosen).

Proper noun[edit]


  1. (uncountable, physics) Ellipsis of EPR paradox. Initialism of Einstein Podolsky Rosen.
Derived terms[edit]

(Einstein Podolsky Rosen):

  • ER=EPR / EPR=ER (a conjecture about the nature of the universe that connects quantum physics to spacetime physics)
  • EPR telephone (a conjecture to communicate non-locally, faster than light, back in time)
Related terms[edit]