
1) Dormancy 2) Estivation 3) Quiescence 4) Quiescency
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https://www.crosswordclues.com/clue/aestivation

1) Estivation
Found on
https://www.crosswordclues.com/clue/aestivation

Dormancy during hot, dry periods
Found on
http://butterflywebsite.com/articles/glossary.cfm

Aestivation or æstivation (from aestas, summer, but also spelled `estivation` in American English) is a state of animal dormancy, similar to hibernation, characterized by inactivity and a lowered metabolic rate, that is entered in response to high temperatures and arid conditions. It takes place during times of heat and dryness, the hot dry sea.....
Found on
http://en.wikipedia.org/wiki/Aestivation
[botany] Aestivation or estivation refers to the positional arrangement of the parts of a flower within a flower bud before it has opened. Aestivation is also sometimes referred to as praefoliation or prefoliation, but these terms may also mean vernation: the arrangement of leaves within a vegetative bud. Aestivation can be an important tax...
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http://en.wikipedia.org/wiki/Aestivation_(botany)

the arrangement of sepals and petals or their lobes in an unexpanded flower bud; cf. vernation arrangement of leaves in a bud.
Found on
http://en.wikipedia.org/wiki/Glossary_of_botanical_terms

Summer dormancy, entered into when conditions are unfavourable for active life i.e. it is too hot or too dry.
Found on
http://en.wikipedia.org/wiki/Glossary_of_entomology_terms

• (n.) The arrangement of the petals in a flower bud, as to folding, overlapping, etc.; prefloration. • (n.) The state of torpidity induced by the heat and dryness of summer, as in certain snails; -- opposed to hibernation.
Found on
http://thinkexist.com/dictionary/meaning/aestivation/

Summer dormancy, entered into when conditions are unfavourable for active life i.e
Found on
http://www.earthlife.net/insects/glossary.html

A period of inactivity, or dormancy, induced by unfavourable conditions. During aestivation, the earthworm curls up into a knot and becomes quite pink.
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http://www.encyclo.co.uk/visitor-contributions.php

Condition in which an organism may pass an unfavourable hot or dry season (the opposite of hibernation) and in which its normal activities are greatly curtailed or temporarily suspended.
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http://www.encyclo.co.uk/visitor-contributions.php

The arrangement of floral envelopes in the bud (aestivus, summer, when flowers mostly appear
Found on
http://www.gardenology.org/wiki/Glossary_of_Gardening_Terms

estivation, aestivation, estivate, aestivate 1. Passing the summer or dry season in a dormant or torpid state. 2. The manner in which plant structures are folded prior to expansion or opening.
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http://www.wordinfo.info/words/index/info/view_unit/768/

a period of summer dormancy.
Found on
https://www.amentsoc.org/insects/glossary/begins/with/a/

A summer version of hibernation
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https://www.encyclo.co.uk/local/20499

In zoology, a state of inactivity and reduced metabolic activity, similar to hibernation, that occurs during the dry season in species such as lungfish and snails. In botany, the term is used to describe the way in which flower petals and sepals are folded in the buds. It is an important feature in plant classification
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https://www.encyclo.co.uk/local/21221

a period of inactivity caused by extreme heat or drought.
Found on
https://www.encyclo.co.uk/local/21694
No exact match found.