As‐cen″sion‐al (�), a. Relating to ascension; connected with ascent; ascensive; tending upward; as, the ascensional power of a balloon.
Ascensional difference(Astron.), the difference between oblique and right ascension; — used chiefly as expressing the difference between the time of the rising or setting of a body and six o'clock, or six hours from its meridian passage.