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A hypothetical subatomic particle that always travels faster than the speed of light.

tach′y·on′ic adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Nuclear Physics) physics a hypothetical elementary particle capable of travelling faster than the velocity of light
[C20: from tachy- + -on]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈtæk iˌɒn)

a hypothetical subatomic particle that travels faster than the speed of light.
[1967; < Greek tachý(s) swift]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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According to the companies, two Virident tachIOn PCIe cards available in usable capacities of 300, 400, 600 and 800 GB combined with an SGI Rackable 1u server can reach 1m IOPS requiring only 800 Gb of operating storage, a new level of performance for data workloads like databases, business analytics, simulation and visualisation working across the SGI Prism XL, Rackable and Altix UV product lines.
Accordingly, TachIOn's compact design requires less space with a half-length, half-height 25 watt PCIe form factor that provides lower power and field FLASH upgradability and are available from SGI .
Windows Server applications and users will now be able to take full advantage of the tachIOn solution to deliver sustained high performance, low latency data access for I/O intensive applications with enterprise class reliability and lifetime.
tachIOn eclipses the competition as it is designed to last for years rather than months, and delivers a sustained performance level that is 2-10x higher, even for random I/O.
Virident Systems, a company specialising in storage solutions based on flash and other non-volatile memory technologies, today announced the availability of its tachIOn Solid State Disk (SSD), designed to provide a high speed storage solution for servers.
The company said that the tachIOn drives are available in 200, 300, or 400 Gbytes of usable capacity per card to fit a range of needs and has a half size/half length profile to maximise density and allow it to fit in 1U and 2U servers.
Other companies like Sycamore Networks, Corvis Corp., Equipe Communications, and Tachion Networks are working on different aspects of socalled intelligent optical switching; most belong to the Optical Domain Service Interconnect (ODSI) Consortium which Sycamore founded in January.
This sort of stuff is up there with tachion particles and warp coil theory as far as I'm concerned - the sort of stuff they gabble on about in Star Trek, but you don't really listen because you know it's just to fill in the quantum singularities in the plot (no, I refuse to ruin that joke by explaining it - those of us who know can smile on our own, the rest of you catch up with the 20th century before the next one arrives, starting with Stephen Hawking's A Brief History of Time).
Milpitas, CA, August 12, 2010 --(PR.com)-- tachIOn Solid State Disk Solution Now Available to Appro's Performance Demanding Customers
Milpitas, CA, July 08, 2010 --(PR.com)-- tachIOn Receives Accolades from Industry Experts and Customers