Aestival :: Aestival (a.) Of or belonging to the summer; as, aestival diseases..
Aestivate :: Aestivate (v. i.) To pass the summer in a state of torpor.
Aestivation :: Aestivation (n.) The state of torpidity induced by the heat and dryness of summer, as in certain snails; -- opposed to hibernation..
Aestivation :: Aestivation (n.) The arrangement of the petals in a flower bud, as to folding, overlapping, etc.; prefloration..
Festival :: Festival (a.) Pertaining to a fest; festive; festal; appropriate to a festival; joyous; mirthful.