Webster's English Dictionary

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accelerate

ac.cel.er.ate \ik-'sel-*-.ra-t, ak-\ \-.ra-t-iv\ vb [L acceleratus, pp. of 
   accelerare, fr. ad- + celer swif]t - more at CELERITY 1: to bring about at 
   an earlier point of time  2: to add to the speed of  3: to hasten the 
   ordinary progress or development of  4a: to enable (a student) to complete 
   a course in less than usual time  4b: to speed up (a course of study)  5: 
   to cause to undergo acceleration  1: to move faster  2: to follow a 
   speeded-up educational program  - ac.cel.er.a.tive aj