to unfold, open out; to break down into constituent parts; to unlap (to overtake the leader in a race in order to no longer be lapped (one or more complete laps behind the leader))
disposable (that can be disposed of); disposable, throwaway, single-use (being intended for a single use, to be discarded rather than reused, refilled or repaired)
to unselect (to cancel a previous selection, especially by removing a mark from a tick box); to unselect (to reverse the previous selection of); to deselect (to remove from an existing selection); to deselect (to not select; to rule out of selection); to uncheck (to remove a checkmark)