Phenology
Pronunciation : Phe*nol"o*gy
Part of Speech : n.
Definition : Defn: The science of the relations between climate and periodic biological phenomena, as the migrations and breeding of birds, the flowering and fruiting of plants, etc. -- Phe`no*log"ic*al (#), a. -- Phe`no*log"ic*al*ly, adv. -- Phe*nol"o*gist (#), n.
[Contracted from Phenomenology.] (Biol.)
Source : Webster's Unabridged Dictionary, 1913