IPA: /ˌɛəroʊˈnɔːtɪkli/
KK: /ˌɛəroʊˈnɔːtɪkli/
In a way that relates to the science or practice of flying and aircraft.
The aircraft was designed aeronautically to enhance its performance in the sky.
Aeronautically → It is formed from "aero-" (from Greek "aēr", meaning air) and "nautical" (from Greek "nautikos", meaning relating to ships or navigation). The word "aeronautically" refers to matters related to navigation or travel through the air.
Think of 'air' ('aero-') and 'navigation' ('nautical') to remember that 'aeronautically' relates to traveling or navigating in the air.