nested
adj.adj. placed inside another similar thing, like boxes that fit inside each other. It also describes information or computer code that is kept within a larger group of the same type.
adj. placed or fitted inside another similar object or structure; in computing, refers to data or code structures contained within one another. Often used as a participial adjective to describe hierarchical arrangements.
The kitchen has a set of nested mixing bowls.
The programmer used nested loops to process the data in the multi-dimensional array.
The architectural design features a series of nested courtyards, each progressively smaller and more private than the last, creating a sense of layered seclusion within the urban environment.
Typically used attributively before a noun or predicatively after a linking verb like 'be'.