As-cĕn'sion, n.
(as-sĕn'shun), n. [Fr. ascension, Pr. ascension, ascensio, Lat. ascensio, from ascendere. See ASCEND.]
Sense 1. The act of ascending: a rising;—specifically, the visible elevation of our Savior to heaven.
Sense 2. The thing rising or ascending. “Vaporous ascensions.” Browne.
Right ascension (Astron.), that degree of the equinoctial, counted from the beginning of Aries, which rises with a star, or other celestial body, in a right sphere; or the arc of the equator intercepted between the first point of Aries and that point of the equator that comes to the meridian with the star; expressed either in degrees or in time.—Oblique ascension (Astron.), an arc of the equator, intercepted between the first point of Aries and that point of the equator which rises together with a star, in an oblique sphere; or the arc of the equator intercepted between the first point of Aries and that point of the equator that comes to the horizon with a star;—little used in modern astronomy.