fractional substitution

noun

: encipherment beginning with fractionating, continued by transposing the units singly, and completed by recombining the units according to the resulting juxtapositions and replacing them by letters again

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now