Zetta- Zetta- Zetta is a decimal unit prefix in the metric system denoting a factor of 10 or . The prefix was added as an SI prefix to the International System of Units (SI) in 1991 and has the symbol Z. Zetta is evocative of the Latin numeral , meaning "seven". Therefore it was used to denote the seventh power of 1000. A prefix of the same value, "hepta", was informally introduced a few years before the promulgation of zetta. It was formed from the Greek (), also meaning "seven". "Hepta" never received official sanction and is obsolete. Zeta (), although
Peta Nocona recovering the thousands of children and women captured during the invasion. For his role in leading many raids and the allegiance of his warriors to his leadership, Peta Nocona's band was to be recognized as a preeminent one and Peta Nocona's band was to be often confused, afterwards, with the Nokoni Comanche, his wife's people. Peta Nocona married Cynthia Ann Parker (Naduah), a white captive who had been adopted by the Nokoni Comanche (her foster father being Tabby-nocca). A great tribute to his affection to Cynthia was that Peta never took another wife, though it was common among the Comanche