ispell-use-framepop-p

ispell-use-framepop-p is a variable defined in `ispell.el'.
Its value is

nil

Documentation:
When non-nil ispell uses framepop to display choices in a dedicated frame.
You can set this variable to dynamically use framepop if you are in a
window system by evaluating the following on startup to set this variable:
(and window-system (condition-case () (require 'framepop) (error nil)))

You can customize this variable.