Prefix for violet

This crossword clue is for the definition: Prefix for violet.
it’s A 17 letters crossword puzzle definition.
Next time, when searching for online help with your puzzle, try using the search term “Prefix for violet crossword” or “Prefix for violet crossword clue”. The possible answerss for Prefix for violet are listed below.

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Possible Answers: ULTRA.

Last seen on: Newsday.com Crossword – Sep 16 2020

Random information on the term “ULTRA”:

The Enigma machine is an encryption device developed and used in the early- to mid-20th century to protect commercial, diplomatic and military communication. It was employed extensively by Nazi Germany during World War II, in all branches of the German military.

Enigma has an electromechanical rotor mechanism that scrambles the 26 letters of the alphabet. In typical use, one person enters text on the Enigma’s keyboard and another person writes down which of 26 lights above the keyboard lights up at each key press. If plain text is entered, the lit-up letters are the encoded ciphertext. Entering ciphertext transforms it back into readable plaintext. The rotor mechanism changes the electrical connections between the keys and the lights with each keypress. The security of the system depends on a set of machine settings that were generally changed daily during the war, based on secret key lists distributed in advance, and on other settings that were changed for each message. The receiving station has to know and use the exact settings employed by the transmitting station to successfully decrypt a message.

ULTRA on Wikipedia