Learn Arabic › B1 › ثُنائِيّ
ثُنائِيّ
dual /θʊˈnaːʔij/
adjectiveB1#2761 most common
Also: binary, bilateral, twofold
Example sentences
هذا الفريق ثنائي.
This team is a duo.
أختي ثنائية اللغة.
My sister is bilingual.
وقّعت الدولتان اتفاقية ثنائية.
The two countries signed a bilateral agreement.
يعمل الحاسوب بنظام العد الثنائي.
The computer runs on the binary numeral system.
تسعى الحكومتان إلى تعزيز العلاقات الثنائية بينهما.
The two governments seek to strengthen the bilateral relations between them.
أجرى الباحثون تحليلاً ثنائي المتغيرات لفهم العلاقة بين الظاهرتين.
The researchers ran a bivariate analysis to understand the relationship between the two phenomena.
Declension
| Case | Singular | Plural |
|---|---|---|
| Nominative | ثنائيٌّ | ثنائيّون |
| Genitive | ثنائيٍّ | ثنائيّين |
| Accusative | ثنائيًّا | ثنائيّين |
| Vocative | يا ثنائيُّ | يا ثنائيّون |
Word family
اثنانtwo (numeral)
ثانٍ / ثانيsecond
مثنىdual, two by two
تثنيةduplication; grammatical dual form
Etymology
The word comes from the triliteral root ث-ن-ي, which carries the sense of folding or doubling and underlies the Arabic numeral اثنان, 'two.' From this root comes ثُنَاء, a diptote pattern used for distributive numerals meaning 'two at a time' or 'in pairs.' Adding the nisba suffix ي, which turns a noun into a relative adjective, produces ثنائي, 'of a pair, dual, binary.'
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