es·ti·vate also
aes·ti·vate 
(
ĕs
t
ə-v
āt
′)
intr.v. es·ti·vat·ed,
es·ti·vat·ing,
es·ti·vates also
aes·ti·vat·ed or
aes·ti·vat·ing or
aes·ti·vates 1. Zoology To be in a dormant or torpid state during a hot dry period, such as the summer months.
2. To spend the summer, especially at a different place from one's usual residence.
[Latin aestīvāre, aestīvāt-, from aestīvus, estival; see ESTIVAL.]