self-similar
adjectiveUK /ˌself ˈsɪmɪlə/
US /ˌself ˈsɪmələr/
Looking the same no matter how big or small you see it.
A fern leaf is self-similar because each small part looks like the whole leaf.
OTHER MEANINGS
2. Having parts that are smaller copies of the whole shape.
The coastline is self-similar at many scales.
3. In mathematics, staying the same when you zoom in or out.
The Koch snowflake is a self-similar curve.
4. In computing, a program or structure that contains a smaller version of itself.
The function was self-similar, calling itself with a smaller input.