the fourth month of the year, according to the common computation; but the second, according to that of the astronomers. It contains 30 days.—The word is derived from apridis, of aperio, "I open;" because the earth, in this month, begins to open her bosom for the production of vegetables. In this month the sun travels through the sign of Taurus.

A PRIORI, a kind of demonstration. See DEMONSTRATION.