nonsynchronous

adjective

1. occurring at the same time; coinciding in time; contemporaneous; simultaneous.
2. going on at the same rate and exactly together; recurring together.
3. Physics, Electricity. having the same frequency and zero phase difference.
4. Computers, Telecommunications. of, relating to, or operating using fixed-time intervals controlled by a clock (opposed to asynchronous).
5. Aerospace. geostationary.

adjective

1. occurring at the same time; contemporaneous
2. physics (of periodic phenomena, such as voltages) having the same frequency and phase
3. occurring or recurring exactly together and at the same ratethe synchronous flapping of a bird’s wings

adj.1660s, “existing or happening at the same time,” from Late Latin synchronus “simultaneous,” from Greek synchronos “happening at the same time,” from syn- “together” (see syn-) + khronos “time” (see chrono-). Meaning “recurring at the same successive instants of time” is attested from 1670s. adj.

1. Occurring or existing at the same time.