Pronunciation: (at"mus-fer'ik, -fēr'-),[key] —adj. 1. pertaining to, existing in, or consisting of the atmosphere: atmospheric vapors. 2. caused by, produced by, or operated on by the atmosphere: atmospheric storms. 3. resembling or suggestive of the atmosphere; having muted tones and softened or indistinct outlines; hazy: atmospheric effects. 4. having or producing an emotional atmosphere: atmospheric quality; atmospheric lighting.Also,at"mos•pher'i•cal.