“enclose in a capsule”
Does this mean a lid?
This sentence mean something has enclose in a capsule. Enclose --> means you envelop or protect something. Capsule is a kind of a pack, a sack, or a bag of some insects like pupa, larvae of the butterfly or bee; it often is a shell which is very soft and made by saliva or mucus of insects.
The correct sentence should be like this: “enclosed in a capsule”
In pharmacology, this sentence mean some kind of pill enclosed in a capsule or “capsules”.
Regard
Kim Sa