practical having or put to a practical purpose or use; "practical mathematics"; "practical applications of calculus"
operable -
capable of being treated by surgical operation; "an operable cancer"
operable -
fit or ready for use or service; "the toaster was still functional even after being dropped"; "the lawnmower is a bit rusty but still usable"; "an operational aircraft"; "the dishwasher is now in working order"