1. Not synchronous; not occurring or existing at the same time or having the same period or phase
   "The asynchronous communication allowed team members in different time zones to collaborate effectively"
    
2. (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
   "The asynchronous protocol allowed for more flexible data transmission between the devices"

See also: allochronic, anachronic, anachronistic, anachronous, in series, nonparallel, nonsynchronous, serial, unsynchronised [Brit], unsynchronized, unsynchronous

Antonym: synchronic, synchronous

Encyclopedia: Asynchronous