IPA: /ˌeɪ.ziˈoʊ.troʊp/
KK: /əˈziːəˌtroʊp/
A mixture of two or more liquids that has a constant boiling point and composition, meaning it behaves the same way when it turns into vapor as it does in liquid form.
The azeotrope of ethanol and water cannot be separated by simple distillation.
Azeotrope → It is formed from "a-" (meaning not) and "zein" (from Greek, meaning to boil) and "tropos" (from Greek, meaning turning). The word describes a mixture that does not change its boiling point during distillation, hence it does not boil differently or 'turn' when heated.
Think of a mixture that does not 'boil' ('zein') differently, which is why it is called an azeotrope.