The crossword solution for the term 'PLOP PRECEDER' is KER, which stands for kinetic energy recovery system. This is a technology used in motor vehicles to capture and reuse energy that would otherwise be lost as heat during braking. It works by converting the kinetic energy of the vehicle into another form of energy, such as electrical energy, which can then be stored and reused. This technology has been used in Formula One racing since 2009 and is now being adopted in other forms of motor sport.