The action of putting a cap on something, or materials used as a finishing layer; can also be a verb form.
From cap plus the present participle and gerund suffix -ing, creating both a verb form and a noun meaning the action or material of capping.
In dentistry, tooth capping with crowns is one of the most common procedures, and modern ceramic caps look so natural that they're virtually indistinguishable from real teeth!
Complete word intelligence in one call. Free tier — 50 lookups/day.