a fraction whose denominator consists of a whole number plus a fraction whose denominator consists of a whole number plus a fraction, and so forth
See continued fraction in American Heritage Dictionary 4
(kən-tĭnˈyo͞od)
noun
A whole number plus a fraction whose numerator is a whole number and whose denominator is a whole number plus a fraction that has a denominator consisting of a whole number plus a fraction, and so on, such as 2 + 1/(3 + 7/(1 + 2/3)).