The process of encasing something in or as if in a capsule; putting contents into a capsule form.
From capsule (from Latin capsula 'small box') plus -ing, creating the present participle form indicating an ongoing action.
Capsuling appears in pharmaceutical manufacturing, space exploration, and even wine-making—it describes the practical act of putting something protective around another thing!
Complete word intelligence in one call. Free tier — 50 lookups/day.