synchrony

 
Pronunciation: /ˈsɪŋkrəni/

noun

[mass noun]
  • 1simultaneous action, development, or occurrence.
  • the state of operating or developing according to the same time scale as something else: some individuals do not remain in synchrony with the twenty-four-hour day
  • 2synchronic treatment or study: the structuralist distinction between synchrony and diachrony

Origin:

mid 19th century: from Greek sunkhronos (see synchronous)