What is "cements"

Usage examples of "cements".

Set a man who has never painted, to watch Rembrandt paint the Burgomaster Six, and he will no more understand how Rembrandt can have done it, than we can understand how the amœba makes its test, or the protoplasm cements two broken ends of a piece of bone.

By this she meant the arbitrary, the odd, the ordinary, the mucilage of daily life that cements our genuine moments of being.

From the same sandy bottom one species picks up the coarser quartz grains, cements them together with phosphate of iron secreted from its own substance” (should not this rather be, “which it has contrived in some way or other to manufacture”?