The word Egresion is misspelled against Egression, a noun meaning "The act of going; egress."
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Egression has double "ss" is mispronounced as "s"
Remember double 'SS' in between the strings egre & ion which should not be misspelled with single 'S'
Wrong Spelling:  egre-s-ion 
Correct Spelling:  egre-ss-ion 
Find more incorrect spellings of Egression to spell right way.