What is the meaning of Cementation?

The act of cementing

The impregnation of the surface of a metal with another material; the manufacture of steel by carburizing iron

The precipitation of mineral matter in the pores of a sediment

The use of a cement join the parts of a broken bone to aid in the healing process

The use of a cement or adhesive to fasten orthodontics or to restore chipped or broken teeth

Source: wiktionary.org