"An atheist believes that there is no evidence that God exists."
No, an atheist believes that God does not exist. An agnostic position is that there is no conclusive evidence that God exists (or that he does not).
I don't get why people keep blurring and misapplying terms. The way people are redefining 'atheist' renders it impossibly broad and therefore meaningless. It is blurring into and subsuming agnosticism. It's becoming a amorphous catch-all philosophical shmoosh. LOL
"Hi I'm an atheist, I believe there definitely is no God."
"Hi I'm an atheist too, but I believe that there may be a God, but there's no definite proof as yet"
"Hi I'm an atheist as well, I'm a Christian atheist, I don't believe there is proof of God, but I still believe"
"Hi, I'm an atheist too, small world! I'm an agnostic atheist, I believe there is no proof God does or doesn't exist but I choose to believe he doesn't"
"Wow, do you notice how we 'atheists' all believe very different things? How can that be? Seems like atheist can mean anything we decide it means."
No, it bloody can't!