IPA: //ˌɛəroʊˈmæɡnɪk//
KK: /ˌɛəroʊˈmæɡnɪk/
Relating to the study of the Earth's magnetic field, especially when observed from the air.
The aeromagnetic survey provided valuable data for the geological study.
Aeromagnetic → It is formed from "aero-" (from Greek "aēr", meaning air) and "magnetic" (from Latin "magneticus", meaning pertaining to magnetism). The word "aeromagnetic" refers to the magnetic properties of the air or the study of magnetic fields in the atmosphere.
Think of 'air' ('aero-') and 'magnetism' ('magnetic') to remember that 'aeromagnetic' relates to the magnetic properties found in the air.