hyperelliptic function
Technical term in mathematics; refers to a function defined on a hyperelliptic curve, generalizing elliptic functions.
Hyperelliptic functions play an important role in the theory of algebraic curves.
Elliptic functions are a special case of hyperelliptic functions, corresponding to curves of genus 1.
Compound of 超 (hyper-) + 楕円 (ellipse) + 関数 (function), calque from English 'hyperelliptic function'.