EDIT This letter open e (ɛ) was misnamed. The actual name for open e is latin epsilon.

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EDIT International Phonetic Alphabet

+ Cardinal vowel no. 3
+ Example in English // gender [ˈdʒɛndə(ɹ)]
+ Sound example

+ Alternatives // ϵ (U+03F5, rarely used)
+ Former versions // unknown
+ Origin // Latin alphabet, small letter

+ In the IPA since 1887
+ IPA number 303

+ This sound can be found in Albanian, Chinese, Czech, Dutch, English, French, German, Hungarian, Italian, Norwegian, Polish, Portuguese, Russian, Serbian, Swedish and Vietnamese.


Synonyms

English
+ Official name in the IPA // ›open-mid front unrounded vowel‹
+ Epsilon


+ Source //
Principles of the International Phonetic Association, London, 1949. /
Journal of the International Phonetic Association, 1989. /
Wikipedia. Die Liste der IPA-Zeichen & History of the International Phonetic Alphabet. /
Handbook of the International Phonetic Association: A Guide to the Use of the International Phonetic Alphabet. /
Pullum, Geoffrey and William A. Ladusaw. Phonetic Symbol Guide. Second edition.

 FrauFriedrich