What's Trending Now
More Trending Words
quadruplex
adjective
quad·ru·plex
\ˈkwädrəˌpleks\
Definition of quadruplex
: being or relating to a system of telegraphy by which two messages in each direction may be sent simultaneously over one wire
Explore Merriam-Webster
There's more!
Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.
Start your free trial today and get unlimited access to America's largest dictionary, with:
- More than 250,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
Origin and Etymology of quadruplex
Latin quadruplic-, quadruplex fourfold, from quadri- + -plic-, -plex -fold
Seen and Heard
What made you want to look up quadruplex? Please tell us where you read or heard it (including the quote, if possible).
Writing? Check your grammar now!