The act of driving or pushing toward something; the force that causes motion or propulsion toward an object.
From Latin 'appellere' meaning 'to drive toward,' with the suffix '-sion' added to create a noun form. This technical term emerged in medieval philosophy and physics.
In medieval science, philosophers loved the word 'appulsion' to explain why things moved toward other things—it was their way of describing gravity before Newton, showing how language shaped scientific thinking.
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