"Front to back" is descriptive
I think in Latin dances it is called
COPA or copas(plural).
One way to start it is from BFY(butterfly) then Open up with Outside foot OUT(OsFtOut) turning away from each other(Back to back), then Inside foot towards each other(face to face) (IsFtIn) then repeat, push out with M.RtHa & W.LtHa etc. This move pattern can be applied in several dances RBA,WLZ,FXT,VNS etc
It is usually ended(Exit) with a dbl solo turn to closed position or BFY.