apriln.[L. Aprilis. OE. also Averil, F. Avril, fr. L. Aprilis.]1. The fourth month of the year.()2. Fig.: With reference to April being the month in which vegetation begins to put forth, the variableness of its weather, etc.()The April's her eyes; it is love's spring. (Shak.)April fool, one who is sportively imposed upon by others on the first day of April.()[L. a (ab) + prior former.]1. (Logic) Characterizing that kind of reasoning which deduces consequences from definitions formed, or principles assumed, or which infers effects from causes previously known; deductive or deductively. The reverse of a posteriori.()3. (Philos.) Applied to knowledge and conceptions assumed, or presupposed, as prior to experience, in order to make experience rational or possible.()A priori, that is, form these necessities of the mind or forms of thinking, which, though first revealed to us by experience, must yet have prexisted in order to make experience possible. (Coleridge.)
