Air - Vine's Expository Dictionary of New Testament Words

Air

[ 1,,G109, aer ]
Eng., air," signifies "the atmosphere," certainly in five of the seven occurrences, Acts 22:23; 1 Corinthians 9:26; 1 Corinthians 14:9; Revelation 9:2; Revelation 16:17, and almost certainly in the other two, Ephesians 2:2; 1 Thessalonians 4:17.

[ 2,,G3772, ouranos ]
denotes "the heaven." The RV always renders it "heaven." The AV translates it "air" in Matthew 8:20. In the phrase "the fowls (or birds) of the heaven" the AV always has "air;" "sky" in Matthew 16:2-Matthew 16:3; Luke 12:56; in all other instances "heaven." The word is probably derived from a root meaning to cover or encompass. See HEAVEN, SKY.

Vine's Expository Dictionary of New Testament Words