menetettyään
Menetettyään is a Finnish word. It is the past active participle, plural genitive form of the verb menettää, which means to lose. Therefore, "menetettyään" literally translates to "having lost" or "after having lost." It indicates that an action or state described in the main clause of the sentence occurred after the subject of the sentence had lost something.
This grammatical form is used to express a sequence of events, where the loss precedes another action.