Definition: Mathematical patterns developed by Benoit Mandelbrot in 1977, in which small parts have the same shape as the whole. Blood vessels and the bronchial tree behave as fractals; some infections and neoplasms also behave as fractals.
[Fr., fr. L. fractus, broken, pp. of frango, to break, + -al]
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Examples: glitazone, GI cocktail, etc.