Dictograph

noun

Dic·​to·​graph

ˈdiktəˌgraf

: a telephonic instrument for picking up sounds in one room and transmitting them to another or recording them

—formerly a U.S. registered trademark

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