air current, existing of air, wind - air shifting (at times with significant power) from an area of large pressure to a region of very low strain; "trees bent under the intense winds"; "when there is no wind, row"; "the radioactivity was being swept upwards by the air current https://thermal-shock-chamber-sol02456.educationalimpactblog.com/57260003/detailed-notes-on-localized-thermal-test-systems