Homonym: 0.666... (Fraction)
The number "0.666..." represents a repeating decimal, where the digit 6 continues infinitely. It can also be expressed as a fraction, specifically 2/3. This means that if you divide 2 by 3, you will get 0.666... as the result.
In mathematics, repeating decimals are common and can be converted into fractions. The notation "..." indicates that the 6 repeats indefinitely. This concept is important in understanding how different forms of numbers relate to each other, especially in topics like arithmetic and number theory.