- a gas that forces out the contents of an aerosol喷射剂(如喷雾器中的压缩气体)
- a thing or substance that propels something, for example the fuel that fires a rocket推进剂(如发射火箭用的燃料)
Word Originmid 17th cent.: originally from Latin propellent- ‘driving ahead (of oneself)’, from the verb propellere, later from propel.