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1.
A hyperbolical and completely unnecessary adverbial phrase in techie or business-speak that simply means "much" or "considerably".
"I think we would like it to be more reliable," Katz-Bassett said. "It's orders of magnitude less reliable than the telephone network right now. I think it should be pretty possible to get it closer."

(From a Yahoo! news report)
by sayasan April 12, 2008

Words related to orders of magnitude

very a lot big extent huge levels massive orderly range scope variable way