abradable
adj. C1 Advanced abrad·able
adj. describing a material that can be worn away or scratched easily. It is often used to describe parts of machines that are designed to rub against each other.
adj. capable of being worn away or eroded by friction or rubbing. Often used in technical contexts to describe coatings or materials designed to protect underlying surfaces from damage.
The engine uses abradable coatings to protect the blades.
Engineers selected an abradable material for the turbine casing to ensure it would wear down safely without damaging the internal components.
The abradable layer on the compressor blades is engineered to sacrifice itself during high-vibration phases, preventing more expensive damage to the stationary parts of the engine.