from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. the fourth power of a number
Coined by Robert Recorde (as zenzizenzike) in his 1557 mathematics book The Whetstone of Witte, from root word zenzic. (Wiktionary)
The fourth power was represented by the square of a square, zenzizenzic, which is a condensed form of the Italian censo di censo, used by Leonardo of Pisa in his famous book Liber Abaci of 1202.