ثنتانثِنْتَانِ fem. of اِثْنَانِ, which see in art. ثنى.ثند and ثندأ ثُنْدُوَةٌ and ثَنْدُوَةٌ and ثُنْدُؤَةٌ and ثَنْدُؤَةٌ: see art. ثدأ.
 Quasi ثنو ثَنْوَى and ثُنْوَى: ثَنَوِىٌّ and ثَنَوِيَّةٌ: اِثْنَوِىٌّ: مَثْنَوِىٌّ: مَثْنَوِيَّةٌ: see art. ثنى.