is a description or metric
which expresses the degree to which a construction project or physical process is carried out in a manner which consumes, incorporates, or wastes more or less of a given material compared to some standard. Making a still usable item out of thinner stock than a prior version increases the material efficiency of the manufacturing process.
- World Resources Forum - Platform for Material Efficiency
In English this means how well a material is able to withstand a weight, or load.