To make quicker; cause to move or advance faster; hasten; add to the velocity of; give a higher rate of progress to: as, to accelerate motion or the rate of motion; to accelerate the transmission of intelligence; to accelerate the growth of a plant, or the progress of knowledge.To bring nearer in time; bring about, or help to bring about, more speedily than would otherwise have been the case: as, to accelerate the ruin of a government; to accelerate death.To become faster; increase in speed.To assign a date earlier than the true or real one; give an earlier date to; antedate.