Aerostat rhymes with:
carlstadt, clarostat, darmstadt, eberstadt, eizenstat, karstadt, lestat, ronstadt, thermostat, urstadt, verhofstadt
Aerostat sounds like:
aerojet, arcade, arcadia, arcata, arched, argot, argued, argueta, arista, aristede, aristide, arkadi, arkady, aroused, arquette, arrest, arrested, arrogate, arzate, arzt, ayerst