Euro

UK: /ˈjʊərəʊ/

US: (Currency yŏŏr′ō, yô′-; Zool. yŏŏr′ō, yûr′-)

Inflections of 'euro' (n):

euro

npl (For the currency in Ireland)

euros

npl (All other usages)

WordReference Random House Learner's Dictionary of American English © 2025

Euro-, prefix. 

1. Euro- is used with roots and means "Europe,'' "Western Europe,'' or "the European Community'': Euro- + -centric → Eurocentric (= centered on Europe);
   Euro- + -crat → Eurocrat (=
   bureaucrat in the European Community).

Also, esp. before a vowel, Eur-.

WordReference Random House Unabridged Dictionary of American English © 2025

eu•ro¹  (yŏŏr′ō, yûr′-), n., pl. -ros, (esp. collectively) -ro. 

1. Zoology wallaroo.

• Ngajuri (Australian Aboriginal language spoken around Jamestown and Peterborough, South Australia) yuru

eu•ro²  (yŏŏr′ō, yô′-), n., pl. -ros. 

1. Currency a proposed single monetary unit for all European contries.

• by shortening and alteration of Eurocurrency 1970–75

Eu•ro  (yŏŏr′ō, yûr′ō), adj. [Informal.]

1. Informal Terms European:
   a Euro expert.

• independent use of Euro-

Euro-, 

1. a shortening of European used as a combining form, esp. with the meaning "western European,'' particularly in reference to the European financial market or the European Economic Community:
   Eurodollar; Eurofarmers.

Also,[esp. before a vowel,] Eur-. 
eu•ro²²  (yŏŏr′ō, yûr′-), n., pl. -ros. 

1. Currency the official common currency of participating European Union countries, effective from January 1, 1999.

• shortening of Eurocurrency 1970–75

Collins Concise English Dictionary © HarperCollins Publishers::

euro / ˈjʊərəʊ/ noun ( -os)

1. the official currency unit, divided into 100 cents, of the member countries of the European Union who have adopted European Monetary Union; these are Austria, Belgium, Croatia, Cyprus, Estonia, Finland, France, Germany, Greece, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Portgual, Slovakia, Slovenia, and Spain; also used by Andorra, Bosnia and Herzegovina, French Guiana, Guadeloupe, Kosovo, Martinique, Mayotte, Monaco, Montenegro, Réunion, San Marino, and the Vatican City

Collins Concise English Dictionary © HarperCollins Publishers::

euro- / ˈjʊərəʊ-/, (before a vowel)eur- combining_form (sometimes capital)

1. Europe or European: eurodollar