Ascensional \As*cen"sion*al\, a.
Relating to ascension; connected with ascent; ascensive;
tending upward; as, the ascensional power of a balloon.
[1913 Webster]
{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.
[1913 Webster]