'asynchronous' definitions:
Definition of 'asynchronous'
(from WordNet)
adjective
(digital communication) pertaining to a transmission technique that does not require a common clock between the communicating devices; timing signals are derived from special characters in the data stream itself [ant: synchronous]
adjective
Not synchronous; not occurring or existing at the same time or having the same period or phase [ant: synchronal, synchronic, synchronous]