tetration

Etymology

 * coined by Reuben Goodstein

Noun

 * 1)  The arithmetic operator consisting of repeated exponentiation, by analogy with exponentiation being repeated multiplication and multiplication being repeated addition, ba denoting a to the power of a to the power of ... to the power of a, in which a appears b times. Notation: ba, a↑↑b or a→b→2

Translations

 * Chinese:
 * Mandarin: 超-4運算
 * Finnish:
 * German: Tetration
 * Italian: tetrazione
 * Korean: 테트레이션
 * Polish: tetracja
 * Swedish: tetrering