IPA: /ˈɛə.rə.nɔt/
KK: /ˈɛrənɔt/
A person who flies in or operates a type of aircraft that is lighter than air, like a balloon or airship.
The aeronaut skillfully navigated the hot air balloon through the clouds.
Aeronaut is formed from "aero-" (from Greek "aēr", meaning air) and "naut" (from Greek "nautēs", meaning sailor). The word describes a sailor of the air, referring to someone who navigates or travels through the atmosphere, typically in an aircraft or balloon.
Think of 'air' ('aero-') and 'sailor' ('naut') together, and remember that an aeronaut is someone who sails through the air.