/ri pul"sheuhn/ , n.
1. the act of repulsing or the state of being repulsed.
2. the feeling of being repelled, as by the thought or presence of something; distaste, repugnance, or aversion.
3. Physics. the force that acts between bodies of like electric charge or magnetic polarity, tending to separate them.
[ 1375-1425; late ME repulsion- (s. of LL repulsio ), equiv. to L repuls ( us ) (see REPULSE) + -ion- -ION ]