Meaning of the word instantaneous in English

What does instantaneous mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

instantaneous

US /ˌɪn.stənˈteɪ.ni.əs/
UK /ˌɪn.stənˈteɪ.ni.əs/

Adjective

happening or done in an instant or immediately

Example:
The reaction was almost instantaneous.
We received an instantaneous reply to our email.
Related Word: