On Memoirs

I’ve just realized something recently. I have no idea what a memoir is. I’d been told previously that it’s a mix of fact and fiction. But not much more.

So I looked it up. The actual definition doesn’t help one bit. It sounds exactly like an autobiography to me. But it’s called something different. Someone enlighten me. Seriously. I don’t currently have any idea what differentiates the two.

What the heck is a memoir?