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ultrafast

[uhl-truh-fast, -fahst] /ˌʌl trəˈfæst, -ˈfɑst/
adjective
1.
extremely fast:
ultrafast computers.
Origin
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for ultra-fast

ultrafast

/ˈʌltrəˌfɑːst/
adjective
1.
extremely fast: an ultrafast internet connection
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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