infusion

The story

1. Latin · derived frominfusio, infusionem“a pouring into, a wetting, a dyeing, a flow”
2. Old French · derived frominfusion
3. Middle English · inherited frominfusioun
4. English todayinfusion

From Middle English infusioun, from Old French infusion, from Latin infusio, infusionem (“a pouring into, a wetting, a dyeing, a flow”), from infundo.