expulsion in WordNet English dictionary

1. the act of forcing out someone or something
   "the ejection of troublemakers by the police"; "the child's expulsion from school"
   ejection  exclusion  expulsion  riddance 
   
2. the act of expelling or projecting or ejecting
   expulsion  projection  ejection  forcing out 
   
3. squeezing out by applying pressure
   "an unexpected extrusion of toothpaste from the bottom of the tube"; "the expulsion of pus from the pimple"
   extrusion  expulsion