“CALLUS” на російській мові

When a patch of bark is removed from a tree the wound is healed by the formation of a callus which differentiates into periderm.

he had a callus on his hand

It normally takes one to two weeks for a callus to form, then about six weeks for the bone fragments to unite.

In these areas, the skin often thickens into a callus , which when excessive can lead to an ulcer.

the exposed surface will quickly form healing callus