IPA: /ɪˌlɛk.trəˈnɪk.li/
KK: /ɪˈlɛktrəˌnɪkli/
In a way that involves the use of electronic devices or technology.
The documents were submitted electronically to save time.
Electronically → It is formed from "electron" (from Greek "ēlektron", meaning amber, which was known to produce static electricity) and the suffix "-ically" (meaning in a manner relating to). The word "electronically" refers to something that is done in a manner relating to electrons or electronic devices.
Think of 'electron' as relating to electricity and remember that 'electronically' means in a way that involves electronic devices.