a. [f. ACCELERATE v. + -IVE; as if ad. L. *accelerātīvus.] Pertaining or tending to acceleration; quickening; adding to velocity.
1751. Blake, Steam-Eng. Cyl., in Phil. Trans., XLVII. 198. Till friction … shall equal the accelerative force.
1839. Carlyle, Chartism, vi. 145. Democracy makes rapid progress … in a perilous accelerative ratio.
1862. Mrs. Speid, Last Years in India, 14. Three second-class passengers, to whose minds the firing of the signal gun had carried no accelerative convictions, were left behind.
