Aestivation

1. n. The arrangement of the petals in a flower bud, as to folding, overlapping, etc.; prefloration.
2. n. The state of torpidity induced by the heat and dryness of summer, as in certain snails; — opposed to hibernation.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.