Asynchronous /(?)/

A·syn·chro·nous

Asynchronous

a.
  1. Not simultaneous; not concurrent in time; -- opposed to synchronous.
  2. occurring in different geologic times; -- of taxa/ (Paleontology)
  3. chronologically misplaced; belonging to a different time or era
  4. occurring at different speeds in different computers connected by a data transmission link; -- said of methods data of transmission between computers. Opposite of synchronous. (Computers)