a. [f. prec. + -AL.]
1. Of or belonging to ascension. Ascensional Difference in Astr.: the difference between the right and oblique ascension of the sun or a star.
1594. Blundevil, Exerc., III. I. xxxiv. 347. The ascentionall difference being knowne, all the oblique ascentions and descentions of the starres are easily knowne by the Tables of Directions.
1796. Hutton, Math. Dict., I. 148. The sun’s Ascensional Difference, converted into time, shews how much he rises before or after 6 o’clock.
1834. U. K. S., Nat. Phil., III. Hist. Astron., ii. 12/1. The ascensional difference (that is, the arc measuring the increase of the day at any place).
2. Of or belonging to ascent; tending upwards.
1753. Chambers, Cycl. Supp., App. s.v. Force, Huygens [held] that bodies constantly preserve their ascensional force, that is, the product of their mass by the height to which their center of gravity can ascend.
1860. Tyndall, Glac., I. § 20. 137. The current, however, continued ascensional.
1880. Colliery Guard., 5 Nov. The diffusion of gases in mines, and its relation to ascensional ventilation.
