IPA: /ˈɛərfloʊ/
KK: /ˈɛrˌfloʊ/
The movement of air, especially as it flows around objects or through spaces.
The airflow in the room was improved by the new ventilation system.
Airflow is formed from "air" (from Old English "aer", meaning the invisible gaseous substance surrounding the earth) and "flow" (from Old English "flowan", meaning to flow or move). The word describes the movement of air in a particular direction or manner.
Imagine the invisible substance around us, 'air', moving or 'flowing' — that's what airflow means.