Page "Charles Howard Hinton" Paragraph 7

Hinton created several new words to describe elements in the fourth dimension.

According to OED, he first used the word tesseract in 1888 in his book A New Era of Thought.

He also invented the words kata ( from the Greek for " down from ") and ana ( from the Greek for " up toward ") to describe the two opposing fourth-dimensional directions — the 4-D equivalents of left and right, forwards and backwards, and up and down.