IPA: /ɪˈlɛktrɒnɪkə/
KK: /ɪˈlɛktrɒnɪkə/
A genre of music that includes various styles of electronic music, often characterized by the use of synthesizers and digital instruments.
She loves listening to electronica while studying because it helps her concentrate.
Electronica is derived from "electron" (from Greek "ēlektron", meaning amber, which is associated with electricity) and the suffix "-ica" (meaning related to or pertaining to). The term refers to music that is produced using electronic instruments and technology, thus relating to the concept of electricity.
Think of 'electron' which relates to electricity, and remember that 'electronica' refers to music that is connected to electronic sounds.