< communications > Nearly synchronised, a term describing a communication system where transmitted signals have the same nominal digital rate but are synchronised on different clocks.
According to ITU-T standards , corresponding signals are plesiochronous if their significant instants occur at nominally the same rate, with any variation in rate being constrained within specified limits.
[Pronunciation? /ples'ee-oh-kroh'nus/?]
(1995-03-02)