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• Eu
  Eu

  europium.
• EU
  EU

  abbreviation

  European Union.
• eu-
  eu-

  a combining form meaning “good,” “well,” occurring chiefly in words of Greek origin (eupepsia ); in scientific coinages, especially taxonomic names, it often has the sense “true, genuine” (eukaryote )
• eu
  eu

  abbreviation

  the European Union

Eu

¹ American  

Symbol, Chemistry.

1. europium.

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EU ² American  

[ee-yoo] / ˈiˈyu /

abbreviation

1. European Union.

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eu- ³ American  

1. a combining form meaning “good,” “well,” occurring chiefly in words of Greek origin (eupepsia ); in scientific coinages, especially taxonomic names, it often has the sense “true, genuine” (eukaryote )

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Eu ¹ British  

symbol

1. europium

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EU ² British  

abbreviation

1. European Union

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eu ³ British  

abbreviation

1. the European Union

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eu- ⁴ British  

combining form

1. well, pleasant, or good

   eupeptic

   euphony

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Etymology

Origin of eu-

< Greek, combining form of eús good (adj.) or eú, eû (neuter, used as adv.) well

Example Sentences

"Today's figures are just the tip of the iceberg," Vicky Cann of Corporate Europe Observatory said, adding: "This takes place in the midst of the biggest deregulation wave ever seen in the EU."

From Barron's • Jun. 10, 2026

Roberta Metsola, president of the European Parliament, said the EU learned to be “the boring partner” with the U.S. amid new trade duties.

From The Wall Street Journal • Jun. 10, 2026

Meanwhile, this week the EU is putting into force its Pact on Migration and Asylum, which introduces new asylum procedures.

From BBC • Jun. 10, 2026

Under current rules, European commissioners and their staff, senior officials and EU lawmakers pushing through legislation through parliament must publish information about their meetings with lobbyists.

From Barron's • Jun. 10, 2026

European Union   Internally, the EU is attempting to lower trade   barriers, adopt a common currency, and move toward convergence of   living standards.

From The 2008 CIA World Factbook by United States. Central Intelligence Agency