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 "Hepta" never received official sanction and is obsolete.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
Exa Corporation Exa Corporation Exa Corporation is a developer and distributor of computer-aided engineering (CAE) software. Its main product is PowerFLOW, a lattice-boltzmann derived implementation of computational fluid dynamics (CFD), which can very accurately simulate internal and external flows in low-Mach regimes. PowerFLOW is used extensively in the international automotive and transportation industries. Exa was founded in November, 1991. Exa raised about $2.4 million in a series of venture capital investments from April 1993 though 1994 from Fidelity Ventures and individuals. More funding was obtained in 1994, 1996, 1998 and 2005, including Boston Capital Ventures as an investor. In 1999, Stephen A.