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 "Hepta" never received official sanction and is obsolete.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
Tera Melos of RX Bandits, These Arms are Snakes, and Melt Banana in addition to headlining tours of their own. Tera Melos have developed a cult-like fan base around the United States and have recently gained some popularity in Europe, Asia, and South America; in September 2009 the "Drugs to the Dear Youth" EP and Tera Melos songs from the "Complex Full of Phantoms" split were combined into the release "Drugs/Complex" on Parabolica Records in Japan. October 2009 the band did an 8-date headlining tour of Japan, and were subsequently featured in the DVD "Parabolica Jam '09". On November 7, 2009, Tera