Definition: "Arianna" in Greek means "friend or acquaintance." It's a term used in Christianity to refer to someone who is close by and can be considered as part of one's family or friends, often without legal authority. In the Bible, Arianna was a person who was called to serve Jesus Christ. She may have been a woman with a long history of service among the Jewish people. The term "friend" could also refer to someone within close proximity in social relationships.