Wiktionary
half-duplex
a. (context telecommunications English) semiduplex
Usage examples of "half-duplex".
As long as you have a half-duplex or full-duplex telephone line, you're in business.
They exist in a strange space, a half-duplex information realm devoid of privacy.
So we’re running our assault gates in half-duplex mode, disassembling and storing the citizens for subsequent virus scanning and reincarnation.