vigesimal (vijesimal)

[L. vigesimus, vicesimus, twentieth, vigesimation (vi-jes-i-ma'shọn), n. At my vigil . 6753 Of the feste and pleyes palestral Chaucer, Troilus, v. 305. Coma vigil. See comal . - Vigils or watch ings of flow a term applied by Linnæus to the opening and shutting of certain flowers at regular hours of the day. See sleep, n., 5.