What is Eo? Is Eo a word?
Eo is seldom used as a stand-alone phrase. In most cases, it’s added to the beginning of a word to add an all-new meaning to it. Generally, eo- is used as a prefix to demonstrate the earliest stages of something. Eocene, Eolithic, and eohippus are some standard terms that incorporate the eo meaning into their definition. The eo definition means primeval, which is why the word often references historical eras. Though the origin of the term isn’t widely known, many believe that it originated in Greek culture. A more modern use of the word is an acronym, EO, which stands for executive order.