The first name Alexandrina is of English, Greek origin. It is often a girl name. It has the following meaning(s):
English: Feminine Form of Greek Alexander Meaning Defender of Man, Common in Britain. Queen Victoria's First Name Was Alexandrina
Greek: Variant of Alexandra: a Feminine Form of Alexander Meaning Defender of Men, Used in Britain; it Became Popular After the Marriage of Future King Edward Vii to Princess Alexandra of Denmark
English: Feminine Form of Greek Alexander Meaning Defender of Man, Common in Britain. Queen Victoria's First Name Was Alexandrina