transposition cipher

American  

noun

Cryptography.

1. a cipher that rearranges the letters of the plain text in a different sequence.

---

Etymology

Origin of transposition cipher

First recorded in 1935–40

Example Sentences

Experts believed it was a transposition cipher but were mystified by the arrangement of strange markings.

From Seattle Times

It's what they call a transposition cipher.

From Project Gutenberg