accelerant

noun

1. 1

   Any substance that can bond, mix, or disturb another substance and cause an increase in the speed of a natural or artificial chemical process.

2. 2

   A substance that accelerates the development of a fire; especially some petroleum product used to spread an act of arson

3. 3

   A substance used to catalyze the vulcanization of rubber

4. 4

   (metaphoric) Something that speeds up a process or speeds up the uptake of something.