racional

Catalan

Etymology

Borrowed from Latin ratiōnālis.

Pronunciation

• IPA^(key): (Northern, Central) [rə.si.uˈnal]
• IPA^(key): (Balearic) [rə.si.oˈnal]
• IPA^(key): (Valencia, Northwestern) [ra.si.oˈnal]

• Audio (Barcelona):

  (file)

Adjective

racional m or f (masculine and feminine plural racionals)

1. rational

   Antonym: irracional

Derived terms

• nombre racional
• racionalitzar
• racionalment

Related terms

• racionalitat

Further reading

• “racional”, in Diccionari de la llengua catalana [Dictionary of the Catalan Language] (in Catalan), second edition, Institute of Catalan Studies [Catalan: Institut d'Estudis Catalans], April 2007

Galician

Pronunciation

 

• IPA^(key): /raθjoˈnal/ [ra.θjoˈnɑɫ]

• IPA^(key): (standard) /raθjoˈnal/ [ra.θjoˈnɑɫ]
• IPA^(key): (seseo) /rasjoˈnal/ [ra.sjoˈnɑɫ]

• Rhymes: -al
• Hyphenation: ra‧cio‧nal

Adjective

racional m or f (plural racionais)

1. rational, reasonable

   Antonym: irracional

Derived terms

• racionalmente

Further reading

• “racional”, in Dicionario da Real Academia Galega (in Galician), A Coruña: Royal Galician Academy, 2012–2026

Portuguese

Etymology

Etymology tree

Proto-Indo-European *h₂er-

Proto-Indo-European *-éh₁ti

Proto-Indo-European *h₂reh₁-

Proto-Italic *rēōr

Latin reor

Latin ratus

Proto-Indo-European *-tis

Proto-Indo-European *-Hō

Proto-Indo-European *-tiHō

Proto-Italic *-tiō

Latin -tiō

Latin ratiō

Proto-Indo-European *h₂el-

Proto-Indo-European *-is

Proto-Indo-European *h₂élisder.?

Proto-Italic *-ālis

Latin -ālis

Latin rationalisbor.

Portuguese racional

Borrowed from Latin rationalis. By surface analysis, razão (under the form racion-) +‎ -al.

Pronunciation

 

• (Brazil) IPA^(key): /ʁa.si.oˈnaw/ [ha.si.oˈnaʊ̯], (faster) /ʁa.sjoˈnaw/ [ha.sjoˈnaʊ̯]

• (Brazil) IPA^(key): /ʁa.si.oˈnaw/ [ha.si.oˈnaʊ̯], (faster) /ʁa.sjoˈnaw/ [ha.sjoˈnaʊ̯]
  • (Rio de Janeiro) IPA^(key): /ʁa.si.oˈnaw/ [χa.si.oˈnaʊ̯], (faster) /ʁa.sjoˈnaw/ [χa.sjoˈnaʊ̯]

 

• (Portugal) IPA^(key): /ʁɐ.sjuˈnal/ [ʁɐ.sjuˈnaɫ]

• (Portugal) IPA^(key): /ʁɐ.sjuˈnal/ [ʁɐ.sjuˈnaɫ]
  • (Southern Portugal) IPA^(key): /ʁɐ.sjuˈna.li/

• Rhymes: (Brazil) -aw, (Portugal) -al
• Hyphenation: ra‧ci‧o‧nal

Adjective

racional m or f (plural racionais)

1. rational

   Antonym: irracional

Derived terms

• racionalismo
• racionalmente

Further reading

• “racional”, in Dicionário Aulete Digital (in Portuguese), Rio de Janeiro: Lexikon Editora Digital, 2008–2026
• “racional”, in Dicio – Dicionário Online de Português (in Portuguese), São Paulo: 7Graus, 2009–2026
• “racional”, in Dicionário da Língua Portuguesa (in Portuguese), Lisboa: Academia das Ciências de Lisboa, 2001–2026
• “racional”, in Dicionário inFormal (in Portuguese), 2006–2026
• “racional”, in Dicionário Infopédia da Língua Portuguesa (in Portuguese), Porto: Porto Editora, 2003–2026
• “racional”, in Michaelis Dicionário Brasileiro da Língua Portuguesa (in Portuguese), São Paulo: Editora Melhoramentos, 2015–2026, →ISBN
• “racional”, in Dicionário Priberam da Língua Portuguesa (in Portuguese), Lisbon: Priberam, 2008–2026

Spanish

Etymology

Etymology tree

Proto-Indo-European *h₂er-

Proto-Indo-European *-éh₁ti

Proto-Indo-European *h₂reh₁-

Proto-Italic *rēōr

Latin reor

Latin ratus

Proto-Indo-European *-tis

Proto-Indo-European *-Hō

Proto-Indo-European *-tiHō

Proto-Italic *-tiō

Latin -tiō

Latin ratiō

Proto-Indo-European *h₂el-

Proto-Indo-European *-is

Proto-Indo-European *h₂élisder.?

Proto-Italic *-ālis

Latin -ālis

Latin rationālisbor.

Spanish racional

Borrowed from Latin rationālis.

Pronunciation

• IPA^(key): /raθjoˈnal/ [ra.θjoˈnal] (Equatorial Guinea, Spain)
• IPA^(key): /rasjoˈnal/ [ra.sjoˈnal] (Latin America, Philippines)
• Rhymes: -al
• Syllabification: ra‧cio‧nal

Adjective

racional m or f (masculine and feminine plural racionales)

1. rational
2. reasonable

   Synonym: razonable

Antonyms

• irracional

Derived terms

• número racional
• racionalmente

Related terms

• ración
• racionalidad
• racionalismo
• razón
• razonar

Further reading

• “racional”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8.1, Royal Spanish Academy [Spanish: Real Academia Española], 15 December 2025