A virtuous cycle?

Hello everybody. I know what a visious circle is but what is a virtuous cycle? Looking forward for your answers.

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As you might expect, it is the opposite of a vicious cycle (note spelling):

virtuous cycle (n.)-- One good thing leads to another. That is, a situation in which improvement in one element of a chain of circumstances leads to improvement in another element, which then leads to further improvement in the original element, and so on.
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