I was thinking about this when I decided to list some dolls on eBay the other day. I wasn't sure whether I could use the word to describe their limb movement being only five way jointed. So I Googled and this is what I found.
"On Gotz Doll Wiki, ARTICULATION refers to whether or not a doll can move one or more of its body parts independently of its body and/or hold that body part in a fixed pose."
So it appears as long as a doll can move its arm, leg or head and hold a pose with them, it's okay to say it's articulated. That made me feel a lot better about using the word.
Speaking of which, I ordered this little lady. She's very pretty but I already have this "Nora" face on a couple of Paola Reina dolls and I really only wanted her nine way jointed body.
She is going to have her head switched with another of my Paola Reina dolls. Thereby providing me with three different faces. As you see below I already have this "Nora" face on the multi jointed body.