Definitions

1. adjective

relating to or characterized by a gas or gases that are not water vapor, especially in the context of atmospheric or meteorological phenomena

“The aerohydrous conditions in the high-altitude regions of the mountains made it difficult for the hikers to breathe.”

2. noun

a substance or mixture that is not water vapor, especially in the context of atmospheric or meteorological phenomena

“The aerohydrous clouds in the storm were a sign of severe weather to come.”