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estivation n. 夏眠 夏眠 estivation n 1: (zoology) cessation or slowing of activity during the summer; especially slowing of metabolism in some animals during a hot or dry period [synonym: {estivation}, {aestivation}] 2: (botany) the arrangement of sepals and petals in a flower bud before it opens [synonym: {estivation}, {aestivation}] AEstivation \[AE]s`ti*va"tion\, n.
1. (Zool.) The state of torpidity induced by the heat and dryness of summer, as in certain snails; -- opposed to {hibernation}. [1913 Webster] 2. (Bot.) The arrangement of the petals in a flower bud, as to folding, overlapping, etc.; prefloration. --Gray. [1913 Webster] [Spelt also {estivation}.] [1913 Webster] Estival \Es"ti*val\, a., Estivate \Es"ti*vate\, v. i., Estivation \Es`ti*va"tion\, n. Same as {[ae]stival}, {[ae]stivate}, etc. [1913 Webster]
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