Причастие прошедшего времени
Rare, chiefly technical or medical: “to rub, massage, or apply friction to (something)”
Определения
To rub or massage (a body part or object), especially to generate warmth, apply ointment, or reduce stiffness. The physiotherapist frictioned the patient’s shoulder to ease the tension.
Used attributively before nouns to indicate relation to friction (e.g., "friction losses")
Определения
Relating to, produced by, or involving friction. The engineer measured the friction torque in the gears.