ربع

Arabic

Etymology

From the root ر ب ع‎ (r-b-ʿ); compare أَرْبَعَة‎ (ʾarbaʿa, “four”).

Noun

رُبُع or رُبْع • (rubuʿ or rubʿ) m (plural أَرْبَاع‎ (ʾarbāʿ))

1. one fourth, one quarter
2. quarter (area or region)

Declension

Declension of noun رُبُع (rubuʿ)‎; رُبْع (rubʿ)

Singular	basic singular triptote
	Indefinite	Definite	Construct
Informal	رُبُع‎; رُبْع rubuʿ‎; rubʿ	الرُّبُع‎‎; الرُّبْع‎ ar-rubuʿ‎; ar-rubʿ	رُبُع‎; رُبْع rubuʿ‎; rubʿ
Nominative	رُبُعٌ‎; رُبْعٌ rubuʿun‎; rubʿun	الرُّبُعُ‎‎; الرُّبْعُ‎ ar-rubuʿu‎; ar-rubʿu	رُبُعُ‎; رُبْعُ rubuʿu‎; rubʿu
Accusative	رُبُعًا‎‎; رُبْعًا‎ rubuʿan‎; rubʿan	الرُّبُعَ‎‎; الرُّبْعَ‎ ar-rubuʿa‎; ar-rubʿa	رُبُعَ‎; رُبْعَ rubuʿa‎; rubʿa
Genitive	رُبُعٍ‎; رُبْعٍ rubuʿin‎; rubʿin	الرُّبُعِ‎‎; الرُّبْعِ‎ ar-rubuʿi‎; ar-rubʿi	رُبُعِ‎; رُبْعِ rubuʿi‎; rubʿi
Dual	Indefinite	Definite	Construct
Informal	رُبُعَيْن‎‎; رُبْعَيْن‎ rubuʿayn‎; rubʿayn	الرُّبُعَيْن‎‎; الرُّبْعَيْن‎ ar-rubuʿayn‎; ar-rubʿayn	رُبُعَيْ‎‎; رُبْعَيْ‎ rubuʿay‎; rubʿay
Nominative	رُبُعَانِ‎‎; رُبْعَانِ‎ rubuʿāni‎; rubʿāni	الرُّبُعَانِ‎‎; الرُّبْعَانِ‎ ar-rubuʿāni‎; ar-rubʿāni	رُبُعَا‎‎; رُبْعَا‎ rubuʿā‎; rubʿā
Accusative	رُبُعَيْنِ‎‎; رُبْعَيْنِ‎ rubuʿayni‎; rubʿayni	الرُّبُعَيْنِ‎‎; الرُّبْعَيْنِ‎ ar-rubuʿayni‎; ar-rubʿayni	رُبُعَيْ‎‎; رُبْعَيْ‎ rubuʿay‎; rubʿay
Genitive	رُبُعَيْنِ‎‎; رُبْعَيْنِ‎ rubuʿayni‎; rubʿayni	الرُّبُعَيْنِ‎‎; الرُّبْعَيْنِ‎ ar-rubuʿayni‎; ar-rubʿayni	رُبُعَيْ‎‎; رُبْعَيْ‎ rubuʿay‎; rubʿay
Plural	basic broken plural triptote
	Indefinite	Definite	Construct
Informal	أَرْبَاع‎ ʾarbāʿ	الْأَرْبَاع‎ al-ʾarbāʿ	أَرْبَاع‎ ʾarbāʿ
Nominative	أَرْبَاعٌ‎ ʾarbāʿun	الْأَرْبَاعُ‎ al-ʾarbāʿu	أَرْبَاعُ‎ ʾarbāʿu
Accusative	أَرْبَاعًا‎ ʾarbāʿan	الْأَرْبَاعَ‎ al-ʾarbāʿa	أَرْبَاعَ‎ ʾarbāʿa
Genitive	أَرْبَاعٍ‎ ʾarbāʿin	الْأَرْبَاعِ‎ al-ʾarbāʿi	أَرْبَاعِ‎ ʾarbāʿi

Derived terms

• اَلرُّبْع اَلْخَالِي‏‎ (ar-rubʿ al-ḵālī)

Descendants

• Catalan: arrova
• Italian: rubbio
• Old Portuguese: arrova, arroba
  • Galician: arroba
  • Portuguese: arroba

• Old Spanish: arroua
  • Spanish: arroba
    • English: arroba
    • French: arobase

See also

• نِصْف‎ (niṣf, “a half”), ثُلْث‎ (ṯulṯ, “a third”), خُمْس‎ (ḵums, “a fifth”), سُدْس‎ (suds, “a sixth”), سُبْع‎ (subʿ, “a seventh”), ثُمْن‎ (ṯumn, “an eighth”), تُسْع‎ (tusʿ, “a ninth”), عُشْر‎ (ʿušr, “a tenth”)