tribological

/ˌtraɪbəˈlɑdʒɪkəl/
adjective
  1. Relating to the study of friction, wear, and lubrication between surfaces in motion.
    • New tribological tests showed that the lubricant works well under high pressure.
    • Tribological research helps engineers design longer-lasting engine parts.
    • The tribological properties of this coating reduce wear on machine components.