I. verb — [no obj.] 1. (especially of a vehicle) begin to move more quickly • the car accelerated towards her.
2. increase in rate, amount, or extent • inflation started to accelerate
• [with obj.]
the key question is whether stress accelerates ageing.
[Physics] undergo a change in velocity.(as adj. accelerating)
• an accelerating electron radiates off some of its energy.
II. derivatives accelerative /əkˈsɛlərətɪv / adjective
– origin early 16th cent. (in the sense ‘hasten the occurrence of’): from Latin accelerat- ‘hastened’, from the verb accelerare, from ad- ‘towards’ + celer ‘swift’.