frac·tal 
(fr
ăk
t
əl)
n. An object whose parts, at infinitely many levels of magnification, appear geometrically similar to the whole. Fractals are used in the design of compact antennas and for computer modeling of natural-looking structures like clouds and trees.
[French, from Latin frāctus, past participle of frangere, to break; see FRACTION.]
fractal adj.

fractal