EPR

See also: E.P.R. and E. P. R.

English

Etymology 1

Abbreviation

Alternative forms

• E.P.R., E. P. R.

Noun

EPR (countable and uncountable, 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. (nuclear energy) Initialism of European Pressurised Reactor, a type of nuclear reactor, later also an initialism of Evolutionary Power Reactor.

   Hypernyms: pressurized reactor, nuclear reactor, reactor

4. (medicine) Initialism of electronic patient record.
5. (environment, law) Initialism of extended producer responsibility.
   • 2025 May 31, Rachel Cernansky, “Solving fashion's waste problem”, in FT Weekend, Life & Arts, page 4:

     From California to the EU, legislators are moving ahead with a concept known as extended producer responsibility (EPR), which aims to hold brands accountable for what happens to the products they put out into the world.

Further reading

• European Pressurised Reactor on Wikipedia.Wikipedia

Etymology 2

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

Proper noun

EPR

1. (physics) Short for Einstein–Podolsky–Rosen paradox

   Synonym: Einstein-Podolsky-Rosen paradox

Derived terms

(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

(Einstein Podolsky Rosen):

• ER (Einstein-Rosen)
• Einstein-Rosen bridge

Further reading

• Einstein–Podolsky–Rosen paradox on Wikipedia.Wikipedia

Anagrams

• ERP, PER, Per., RPE, Rep, Rep., per, per-, per., pre, pre-, rep

French

Pronunciation

• Audio (France (Vosges)):

  (file)

Proper noun

EPR m

1. initialism of Groupe Ensemble pour la République