1. adjective /ˈsɪmələ,ˈsɪməlɚ/
b) Of geometrical figures including triangles, squares, ellipses, arcs and more complex figures, having the same shape but possibly different size, rotational orientation, and position; in particular, having corresponding angles equal and corresponding line segments proportional; such that one can be had from the other using a sequence of operations of rotation, translation and scaling.
2. noun /ˈsɪmələ,ˈsɪməlɚ/
A material that produces an effect that resembles the symptoms of a particular disease
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