Emily Dickinson Lexicon

ES-TI-VA'TION, n. [L. æstivatio, from æstas, summer, æstivo, to pass the summer.]

1. The act of passing the summer. Bacon.
2. In botany, the disposition of the petals within the floral gem or bud; 1. 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. Martyn.