Aestivation
Pronunciation : ?s`ti*va"tion
Part of Speech : n.
Definition : 1. (Zo?l.)
Defn: The state of torpidity induced by the heat and dryness of summer, as in certain snails; -- opposed to hibernation.
2. (Bot.)
Defn: The arrangement of the petals in a flower bud, as to folding, overlapping, etc.; prefloration. Gray. [Spelt also estivation.]
Source : Webster's Unabridged Dictionary, 1913