Dictionary.com
Thesaurus.com

aestivation

British  
/ ˌiːstɪˈveɪʃən, ˌɛs- /

noun

  1. the act or condition of aestivating

  2. the arrangement of the parts of a flower bud, esp the sepals and petals

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012