Meteorology (mĕ′ tē̇-ẽr-ŏl′ō̇-jy), the science which deals with the phenomena of the earth’s atmosphere. These phenomena may be grouped under three different heads: aërial phenomena, including winds, cyclones etc.; aqueous phenomena, as rain, fogs, clouds etc.; and luminous phenomena, as lightning, the aurora borealis etc. This science, which is of enormous importance to our race, is universally recognized as yet in en embryonic state. For subjects ordinarily grouped under this head the student is referred to such individual articles as Fog, Cloud, Cyclone, Lightning.