Crypto – Secret or hidden
To remember the definition of the word crypto, use the following mnemonic:
The crypt was full of toes (crypto) all hidden behind a secret door.
Examples of crypto in a sentence
Collectively, the science of secure and secret communications, involving both cryptography and cryptanalysis, is known as cryptology.
While Fred, and to a lesser extent Cynthia, had solved cryptograms in the newspaper, neither were particularly adept at it.
Symmetric algorithms are used in cryptography when two people share a secret code and key for communication.
Although crypto is not a word in its own right, it is the prefix, or start, of many words, indicating that what follows is secret or hidden.