1. A series of events or phenomena that recur regularly and usually lead back to the starting point
The water cycle is essential for life on Earth.
O ciclo da água é essencial para a vida na Terra.
3. A series of books, movies, or musical compositions connected by theme or character
The director completed her film cycle with the final installment.
A diretora completou seu ciclo de filmes com o capítulo final.
4. In biology, the sequence of stages through which an organism passes
The life cycle of a butterfly includes four stages.
O ciclo de vida de uma borboleta inclui quatro estágios.