Note: Do not rely on this information. It is very old.
EE, the fifth letter of the Greek, Latin, and modern European alphabets. The symbol represents the Phoenician he, which somewhat resembles an E reversed, and is said to have been derived from a hieroglyph representing a window. In Phoenician he was the rough-breathing, the modern H sound; but the Greeks took it to represent that sound for which it now stands in languages of the Continent of Europe. The letter E is of more frequent occurrence and is more variously sounded than any other in English. It is often mute. This is due partly to the fact that, as in French, the final e was often dropped in the 16th century but still written, and partly to the fact that other words were written with final mute e by false analogy with those in which the symbol had survived the sound. In Music, E is the third note of the scale of C. The E proposition in Logic is the universal negative.