Matryoshka Doll - As Metaphor

As Metaphor

Matryoshkas are also used metaphorically, as a design paradigm, known as the "matryoshka principle" or "nested doll principle". It denotes a recognizable relationship of "object-within-similar-object" that appears in the design of many other natural and man-made objects. Examples include the Matrioshka brain and the Matroska media-container format. The "matryoshka principle" is also an example of Mise-en-abyme. Compare Fractal.

The onion metaphor is of similar character. If the outer layer is peeled off an onion, a similar onion exists within. This structure is employed by designers in applications such as the layering of clothes or the design of tables, where a smaller table sits within a larger table and a yet smaller one within that.