Aestivation

n. summer dormancy (Zoology); manner in which the petals and leaves of a flower bud are arranged (Botany); passing of a summer in a specific place (also estivation)

Estivation or aestivation (from Latin aestas, summer) is a rare state of dormancy similar to hibernation, but during the months of the summer. Animals that estivate spend a summer inactive and insulated against heat to avoid the potentially harmful effects of the season (such as the increase in temperature, or relative lack of water), or to avoid contact with other species with which they may otherwise be in competition, or for which they are prey. Some animals, including the California red-legged frog, may estivate to conserve energy when their food and water supply is low.
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Noun
1. (zoology) cessation or slowing of activity during the summer; especially slowing of metabolism in some animals during a hot or dry period
(synonym) estivation
(hypernym) dormancy, quiescence, quiescency
(derivation) estivate, aestivate
(classification) zoology, zoological science
2. (botany) the arrangement of sepals and petals in a flower bud before it opens
(synonym) estivation
(hypernym) arrangement
(part-holonym) flower bud
(classification) botany, phytology

(n.)
The state of torpidity induced by the heat and dryness of summer, as in certain snails; -- opposed to hibernation.
  

(n.)
The arrangement of the petals in a flower bud, as to folding, overlapping, etc.; prefloration.
  

aestivation /,i:sti'veiʃn/
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