Emily Dickinson Lexicon

E-TE'SIAN, a. [ete'zhan; L. etesius; Gr. ετησιος, from ετος, a year. Qu. Eth. ዐወድ, owed, awed, a circuit or circle, and the verb, to go round.]

Stated; blowing at stated times of the year; periodical. Etesian winds are yearly or anniversary winds, answering to the monsoons of the East Indies. The word is applied, in Greek and Roman writers, to the periodical winds in the Mediterranean, from whatever quarter they blow. Encyc.