It means two events occurring simultaneously with a significance unto that event. However, no casual connection can be found. This is my optimistic replacement for coincidence. The bias is real in this word; a milder form of destiny which lets you push its meaning towards every day occurrences. You dreamt of a emerald scarabs. One flew into my window as we talked about it. How do you explain that? Is it coincidence or a slight tug of destiny on the strings of your life?