Ascension

Vaporous ascensions from the stomach.
Sir T. Browne.

Ascension Day, the Thursday but one before Whitsuntide, the day on which commemorated our Savior's ascension into heaven after his resurrection; -- called also Holy Thursday. -- 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. It is little used in modern astronomy.