It is one word "staircase" (open flight of stairs, usually with rails).
The correct spelling is "staircase."
floating stair case
A stair case causes the body to do work when assending it.
stare
floating stair case
The Stair Case - 2014 was released on: USA: 17 July 2014
the Irish for history is stair
The correct spelling is stare.
an escalator
The grand stair case is the place that connected all the important parts of the first class area.
a stair case
potential difference
it depends on how many steps there are.