The term 'atmospheric' can be broken down into four crossword solutions: AIRY (4 letters), AERIAL (6 letters), SMOG (4 letters), and AERI (4 letters). AIRY refers to something that is light and delicate, while AERIAL is related to the air or sky. SMOG is a combination of smoke and fog, which is a type of air pollution. Finally, AERI is an archaic term for air or atmosphere. All of these words are related to the atmosphere, which is the layer of gases surrounding the Earth.