asynchronous
adjectiveUK /eɪˈsɪŋ.krə.nəs/
US /eɪˈsɪŋ.krə.nəs/
Happening at different times, not at the same time.
The students watched the video lesson asynchronously, so they could learn whenever they wanted.
OTHER MEANINGS
2. In computing, describing communication where the sender does not wait for the receiver to respond before continuing.
Email is an asynchronous way to communicate because you don't have to reply right away.
3. In education, describing learning that happens at different times rather than in a live class.
She took an asynchronous online course and studied late at night.
4. In electronics, describing signals that are not timed by a shared clock.
The circuit uses an asynchronous signal that can arrive at any moment.