IPA: /ˌætməˈsfɪrɪk/
KK: /ˌæt.məˈsfɪr.ɪk/
Related to the air or the atmosphere, often used to describe a mood or feeling created by a setting or environment.
The restaurant had an atmospheric design that made it feel cozy and inviting.
Atmospheric → It is formed from "atmos" (from Greek "ἀτμός", meaning vapor or steam) and "spheric" (from Greek "σφαῖρα", meaning sphere). The word "atmospheric" refers to anything related to the vapor or steam that surrounds the Earth in a spherical shape, namely the atmosphere.
Think of 'vapor' ('atmos') surrounding the 'sphere' ('spheric') of the Earth — that's what atmospheric means.