What is Women's Fiction?

photo from salon.com

I once posted this: Women's fiction is that which is written with female readers in mind. It's about the protagonist's journey through a story, about her growth, and her [experience].
`
This is what I tell people, too, when they ask what I write, but I've been finding that, for some, this explanation of the wide-spanning category isn't enough. They want it broken down further.
`
Wikipedia defines women's fiction as an umbrella term for a wide-ranging collection of literary sub-genres that are marketed to female readers, including many mainstream novels, romantic fiction, "chick lit," and other sub genres.
`
Better. Clearer. I'll have to remember this.
`
Whether you write it or read it, how would you describe to others what, exactly, women's fiction is? What types of books does the term include for you?