Definition of plesiochronous in English:

plesiochronous

Pronunciation /ˌpliːzɪˈɒkrənəs/

adjective

Electronics
  • Designating or relating to systems which are operating with clocks that are not perfectly synchronized with each other.

Origin

1970s; earliest use found in XXI Congresso Internazionale per l'Elettronica. From plesio- + -chronous, after synchronous.