Word.ws English Dictionary

Q-Day

Q-Day proper noun: a conjectured future day on which quantum computing developments will make it possible to defeat the encryption system that underpins cryptocurrency.

Proper noun

Q-Day

  1. A conjectured future day on which quantum computing developments will make it possible to defeat the encryption system that underpins cryptocurrency.

Origin of Q-Day

The Q stands for quantum.

Questions about Q-Day

What does Q-Day mean?
Q-Day means a conjectured future day on which quantum computing developments will make it possible to defeat the encryption system that underpins cryptocurrency.
What part of speech is Q-Day?
Q-Day is a proper noun.

Words near Q-Day in the dictionary

  1. Q-carbon
  2. Q-cars
  3. Q-Celtic
  4. Q-code
  5. Q-codes
  6. Q-Day
  7. q-derivative
  8. q-derivatives
  9. q-gram
  10. q-grams
  11. Q-learning

Source and license

Adapted from Wiktionary: Q-Day (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “Q-Day.” Word.ws, https://word.ws/q-day. Based on Wiktionary, CC BY-SA 4.0.