aestivation

noun3

1. •
   A state of inactivity and metabolic depression during summer: the summer version of hibernation.
2. •
   The arrangement (vernation) of the parts of a flower inside a bud; prefloration.
3. •
   (no longer used) The spending or passing of a summer.

   • On the Vnder Story, tovvards the Garden, Let it be turned to a Grotta, or Place of Shade, or Estiuation. — 1625