This paper explains the meaning of e-journals: they are usually called by American literature such as “electronic journals” or “e-journals” and they are digital objects that are on the cyberspace only. A pragmatically discussion about e-journals must define them even using a summarize definition. What is actually an e-journal? Starting from we working in a changing environment, we have to strongly reflect because nowadays there isn’t a standard definition about e-journals. This definition should consider the status, function and quality of these materials but “if a definition hasn’t drown yet, it happens because e-journals are objects so that difficult and with an ephemeral consistence”.