[f. ACCELERATE v. + -ING2.] Quickening, hastening, or tending to quicken or hasten. Accelerating force: a force that produces continually increased motion.
1829. U. K. S., Nat. Philos., I. I. iii. § 25. 9. This peculiar species of motion is therefore called accelerated motion, and the force which produces it is called an accelerating force.
1878. Seeley, Stein, iii. 524. England’s rapidly accelerating decline, he [Niebuhr in 1828] writes, is a very remarkable and mournful phenomenon.
