ثلثي

In a sentence

• ثلثي الكوب مملوء.

  Two-thirds of the cup is full.

  Here the word 'ثلثي' represents a fractional part of a object capacity.

• قرأت ثلثي الكتاب.

  I read two-thirds of the book.

  Here 'ثلثي' signifies a portion of the content consumed or completed.

• ثلثي العمال غائبون اليوم.

  Two-thirds of the workers are absent today.

  In this example, 'ثلثي' quantifies a part of a group of people.