n. The act of ascending; a rising; specifically, the bodily passing from earth to heaven of Christ, in the presence of his disciples (Mark xvi. 19; Luke xxiv. 50, 51; Acts i. 1–11).n. [capitalized] The day on which the ascension of Christ is commemorated in the church; Ascension day.n. That which rises or ascends; a fume.n. In astronomy, the rising of a star or point above the horizon on the celestial sphere.n. A going back in time, or in the order of genealogical succession; ascent.n. In mod. astron., the right ascension of a star or point of the sphere is the arc of the equator intercepted between its circle of declination and the vernal equinox or first point of Aries, reckoned toward the east. This meaning is derived from the conception of an observer at a point on the earth's equator where all the stars rise vertically.