300px|thumb|Examples of superellipses for , .
300px|thumb|Examples of superellipses for , .
A superellipse, also known as a Lamé curve after Gabriel Lamé, is a closed curve resembling the ellipse, retaining the geometric features of semi-major axis and semi-minor axis, and symmetry about them, but defined by an equation that allows for various shapes between a rectangle and an ellipse.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).