Alexandra is the feminine form of the given name Alexander

Alexander

Alexander is a common male first name, and less common surname. The most famous is Alexander the Great, the King of Macedon who created one of the largest empires in ancient history.- Origin :...

, which is a romanization

Romanization

In linguistics, romanization or latinization is the representation of a written word or spoken speech with the Roman script, or a system for doing so, where the original word or language uses a different writing system . Methods of romanization include transliteration, for representing written...

 of the Greek

Greek language

Greek is an independent branch of the Indo-European family of languages. Native to the southern Balkans, it has the longest documented history of any Indo-European language, spanning 34 centuries of written records. Its writing system has been the Greek alphabet for the majority of its history;...

 name Αλέξανδρος (Alexandros). Etymologically

Etymology

Etymology is the study of the history of words, their origins, and how their form and meaning have changed over time.For languages with a long written history, etymologists make use of texts in these languages and texts about the languages to gather knowledge about how words were used during...

, the name is a compound of the Greek verb ἀλέξειν (alexein) "to defend" and the noun ἀνδρός (andros), genitive of ἀνήρ (anēr) "man". Thus it may be roughly translated as "protector of man". The name was one of the titles ("epithets") given to the Greek goddess Hera and as such is usually taken to mean "one who comes to save warriors".