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scramble

Brit a motorcycle rally in which competitors race across rough open ground
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

scramble

[′skram·bəl]
(aerospace engineering)
To take off as quickly as possible (usually followed by course and altitude instructions).
(communications)
To mix, in cryptography, in random or quasi-random fashion.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

scramble

i. To encrypt any plain-language message during the transmission process so as to make it unintelligible to a third party.
ii. The whole action involved in getting interceptors into the air in the shortest time possible, sometimes without adequate warm-up. For an air defense mission, aircraft ordered to scramble are given the initial vector; the course to roll out and the height to climb to are also indicated in the scramble call and follow the word scramble (e.g., “Mission 70 scramble, scramble, initial vector 070°, angels 10”). Angels 10 means 10,000 ft altitude.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved

scramble

To make data indecipherable. The term stems from the early days of cryptography, which camouflaged analog transmissions by combining them with secret frequency patterns. Restoring the original frequencies is called "descrambling." Today, cryptography is mostly digital, and the 0 and 1 bits of digital data are rearranged into a different sequence. See cryptography.
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References in periodicals archive ?
Hughes Architects, agents for the developers, pointed out in its planning statement that the motor cross scrambling track has been "established and lawful" for 20 years.
This technique uses the steps below to implement scrambling of an image:
The algorithm proposed in this paper is based on 2D-SLMM and Henon map that is suitable for the scrambling of arbitrary ratio of length to width non-square images and is able to resist chosen-plaintext attack.
This interference in the broadcast resulted in the scrambling of many channels including Al Jazeera and other channels broadcast from Lebanon, as well as the Egyptian El-Masrya and Channel 1.
The software now includes a data scrambling module to reduce corporate data exposure during testing.
"Farmers, communities and investment bankers are scrambling to be a part of the solution to this country's fuel shortage."
With commodities through the roof, companies are scrambling to dig and drill.
Data encryption is defined as the process of scrambling transmitted or stored information making it unintelligible until it is unscrambled by the intended recipient.
She describes "scrambling" as a "sport that's more adventurous than hiking, less extreme than climbing."
Scrambling is a problem on mountains and within communities throughout the Valleys.
At the time this issue is going to press, the prospect of war has international allies scrambling to choose sides and social justice organizations scrambling to save themselves.
The defocusing license is tied to categorial membership, triggering scrambling movement of pronouns and definites toward the functional domain.