What does the z in dragon ball z mean?

Some materials may be inappropriate for those under 18. Copyright ©2012 kgb. All rights reserved  |  Terms of use  |  Privacy  |  Refunds  |  Guidelines

* *Available on Alltel, AT&T, Cellular One, Cellular South, Cincinnati Bell, Cricket, nTelos, Cellcom, Sprint, T-Mobile, US Cellular, Verizon Wireless & Virgin Mobile. Answers cost just $1.49 each, this is not a subscription service. Message & Data rates may apply. Premium charges billed to customer's wireless bill or deducted from customer's prepaid balance. Customers can stop participating and receiving messages by sending STOP to 542542, receive help about issues by sending HELP. All purchases must be authorized by the account holder.