Bible Dictionaries
Diplex

Webster's Dictionary

(a.) Pertaining to the sending of two messages in the same direction at the same time. Diplex and contraplex are the two varieties of duplex.

Bibliography Information
Webster, Noah. Entry for 'Diplex'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​d/diplex.html. 1828.