CONTRAPLEX
Source: 567
Con″tra‐plex (?), a. [[Contra- + -plex as in duplex.]] (Teleg.) Pertaining to the sending of two messages in opposite directions at the same time.
Source: 567
Con″tra‐plex (?), a. [[Contra- + -plex as in duplex.]] (Teleg.) Pertaining to the sending of two messages in opposite directions at the same time.