me·te·or·ol·o·gy 
(mē′tē-ə-rŏlə-jē)
(mē′tē-ə-rŏlə-jē)n.
The science that deals with the phenomena of the atmosphere, especially weather and weather conditions.
[French météorologie, from Greek meteōrologiā, discussion of astronomical phenomena : meteōron, astronomical phenomenon; see METEOR + -logiā, -logy.]
me′te·or·o·logi·cal (-ər-ə-lŏjĭ-kəl), me′te·or·o·logic adj.
me′te·or·o·logi·cal·ly adv.