IPA: /əˈvaɪənɪk/
KK: /əˈvaɪənɪk/
Relating to the electronic systems used in aircraft, such as navigation and communication devices.
The new aircraft is equipped with advanced avionic systems for better navigation.
Avionic is formed from "aviation" (from Latin "avis", meaning bird) and "-onic" (a suffix used in technology-related terms). The word refers to technology related to the operation of aircraft, drawing from the concept of flight associated with birds.
Think of 'aviation' which relates to birds and flight, and remember that 'avionic' refers to technology used in aircraft.