والعالم أي ما سوى الله تعالى من الموجودات
The world means all existing things other than God Most High.
The phrase mā siwā Allāh establishes the boundary: God is not one member of a created totality. The term existing things makes the subject actual created beings, not merely imagined objects or names.
The term therefore does not mean only Earth or the visible universe. Created realities beyond our senses also fall within the general scope, insofar as their existence is established.