Definify.com
Webster 1913 Edition
AEstivation
Æsˊti-va′tion
,Noun.
1.
(Zool.)
The state of torpidity induced by the heat and dryness of summer, as in certain snails; – opposed to
hibernation
. 2.
(Bot.)
The arrangement of the petals in a flower bud, as to folding, overlapping, etc.; prefloration.
Gray.
[Spelt also
estivation
.]