Also found in: Dictionary, Thesaurus, Medical, Wikipedia.
Related to thunderbolt: Thunderbolt Display


1. a flash of lightning accompanying thunder
2. (in mythology) the destructive weapon wielded by several gods, esp the Greek god Zeus
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005


In mythology, a lightning flash accompanied by a material bolt or dart and which causes great damage; it is still used as a popular term for a single lightning discharge accompanied by thunder.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.


A peripheral interface from Intel introduced in 2011. First used on a MacBook Pro laptop, Thunderbolt provides simultaneous transfer of DisplayPort graphics for the monitor and PCI Express data for storage and other devices. Thunderbolt 3 added USB 3.1 Gen 2 connectivity.

Up to six peripherals can be connected in a daisy chain, providing an expansive external interface over one port. However, computers generally have several Thunderbolt ports. See DisplayPort, PCI Express and USB.

Thunderbolt 4
In 2020, Thunderbolt 4 is expected to have the same speed as Thunderbolt 3 but also support USB 4. Following are the Thunderbolt generations, and each is backward compatible with the previous one. See Thunderbolt Display and Thunderbolt Bridge.
 DataTB       Rate   ---Interfaces---   Port Gen     (GBps)  DP    PCIe   USB   Type

 1 (2011)  10   v1.1a  v2 x4        mDP
 2 (2013)  20   v1.2   v2 x4        mDP
 3 (2015)  40   v1.2   v3 x4  3.1   USB-C
 4 (2020)  40   v1.3   v3 x4  4     USB-C

Mini DisplayPort (mDP)
Thunderbolt 1 and 2 use the Mini DisplayPort plug and socket; however, Thunderbolt 3 switched to USB-C (see USB Type C).

Thunderbolt on a Desktop Mac
Two of the six Thunderbolt ports are used on this 2nd-generation Mac Pro. The black cable delivers DisplayPort to the monitor, and the orange cable transfers data between an external drive over PCI Express. See Mac Pro.
Copyright © 1981-2019 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.
References in periodicals archive ?
Remarks: The maximum real world performance of this Thunderbolt 2 device is 1375MB/s.
The two-mile, 2,050-vertical-foot Thunderbolt trail is pretty hard to negotiate going down, with a steep turn at the Big Bend section and narrow tricky passages, especially in ungroomed powder with rocks and twigs around.
"The Thunderbolt has a smaller footprint and takes up less space than traditional auger boring machines," Malcomb continued.
ON TOUR IN THE 1970S: The Thunderbolts marching band and, top right, Bruce Wasser
According to the company, the successful completion of the Thunderbolt Technology compliance testing means that Sonnet's customers can install systems with Myricom high-performance 10GbE adapters with confidence that they are compatible not only with Sonnet's family of Thunderbolt products, but also with other products.
Then you need to drill a hole where you want to hang the basket and fit the Thunderbolt.
The company will incorporate PCI-Express 3.0 in Thunderbolt, but could not provide a time frame for when it will be accomplished.
In two dozen tests in the San Francisco Bay area using Ookla's Speedtest app on the ThunderBolt, I averaged download speeds of 12.4 megabits per second.
The former Thunderbolt roller coaster on Coney Island, which was torn down in 2000 The vacant Coney Island site that for years housed the famed Thunderbolt roller coaster has come back on the market, and the city is interested in adding part of it to its growing amusement district, according to the Wall Street Journal.
GARRETH O'CONNOR isn't one to talk himself up so it was no surprise to hear him say he thought Darren Quigley should have stopped his thunderbolt on Friday.
WITH jumps racing finally back in the saddle after the freezing weather relented, Hinton Thunderbolt can preserve the feel-good factor at Plumpton today.