This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. A generalization of a function

"I had to demonstrate all kinds of hyperfunction stunts a mortal wouldn't be able to do, like appearing on both sides of the net at once, just to impress him with my immortalness; and yet I had to avoid killing the old man with the ball, and -- oh yeah -- let him win somehow, too."

eciency    point    line    distance    twistor