See also: El, 티, and Appendix:Variations of "ei" English English Wikipedia has an article on:EIWikipedia Noun EI (countable and uncountable, plural EIs) (Canada) Initialism of employment insurance. Initialism of extreme ironing. Initialism of enhanced interrogation. Initialism of enemy infantry. (education) Initialism of extra instruction. Proper noun EI Initialism of Encyclopædia Iranica. Anagrams -ie, IE, IE., i. e., i.e., ie French Alternative forms ÉI Pronunciation IPA(key): /ø.i/ Audio:(file) Proper noun EI m Initialism of État islamique (“Islamic State, IS”). Italian Proper noun EI m Initialism of Esercito Italiano. Spanish Proper noun EI m Initialism of Estado Islámico.Wikiwand - on Seamless Wikipedia browsing. On steroids.