serendipitous
US /ˌser.ənˈdɪp.ə.t̬əs/
UK /ˌser.ənˈdɪp.ə.t̬əs/

1.
serendipitoso, fortunato, casuale e benefico
occurring or discovered by chance in a happy or beneficial way
:
•
It was a serendipitous discovery that led to the new medicine.
Fu una scoperta serendipitosa che portò alla nuova medicina.
•
Their meeting was entirely serendipitous.
Il loro incontro fu del tutto serendipitoso.