ESTIVA'TION, n. [L. oestivatio, from oestas, summer, oestivo, to pass the summer.] 1. The act of passing the summer.2. In botany, the disposition of the petals within the floral gem or bud; l. convolute, when the petals are rolled together like a scroll; 2. imbricate, when they lie over each other like tiles on a roof; 3. conduplicate, when they are doubled together at the midrib; 4. valvate, when as they are about to expand they are placed like the glumes in grasses.
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