According to the Greek version of the Wikipedia article dedicated to Orianthi Panagaris (b. 1985), her name is spelled as Οριάνθη in modern Greek:
-
https://el.wikipedia.org/wiki/%CE%9F%CF%81%CE%B9%CE%AC%CE%BD%CE%B8%CE%B7 (in Greek)
I don't know if her name already existed in the time of the ancient Greeks, but if it did, then the proper transcription of her name from the ancient Greek alphabet to the modern Latin alphabet is
Orianthe. For more information about this, please see:
-
https://en.wikipedia.org/wiki/Greek_alphabet#Letters (in English)
With that said, it appears that few Greek given names start with
Ori- or even
Ory- and
Orei- (which can both easily end up variantly transcribed as
Ori-). Examples of such names are Origenios (Ὀριγενίος), Orilaos (Ὀρίλαος), Orybion (Ὠρυβίων) and Oreibasios/Orybasios (Ὀρειβάσιος). I found those names here:
-
Ori-:
http://www.trismegistos.org/nam/list_all.php?selection=O&p=7 (in English)
- Ory-:
http://www.trismegistos.org/nam/list_all.php?selection=O&p=9 (in English)
- Omicron:
http://web.archive.org/web/20120325073647/http://www.etymologica.com:80/page20.htm (in English)
-
Omega:
http://web.archive.org/web/20120325073727/http://www.etymologica.com:80/page29.htm (in English)
Since Orianthe/Orianthi is written with an omicron (Ο) and not an omega (Ω), we should discard the names and words that start with an omega. The first element of the aforementioned "omicron names" is probably derived from Greek ὄρος
(oros) meaning "mountain, hill" (compare
Orestes), as most other words starting with
ori-,
ory- and
orei- don't seem to make much sense in a given name:
- ori-:
http://www.perseus.tufts.edu/hopper/resolveform?type=start&lookup=ori&lang=greek (in English)
- ory- (which was originally oru-):
http://www.perseus.tufts.edu/hopper/resolveform?type=start&lookup=oru&lang=greek (in English)
- orei-:
http://www.perseus.tufts.edu/hopper/resolveform?type=start&lookup=orei&lang=greek (in English)
This certainly goes for Orianthe/Orianthi, which clearly has Greek ἄνθος
(anthos) meaning "flower" as a second element (compare
Euanthe). So, all in all, I would personally say that the meaning of Orianthe/Orianthi is roughly "mountain of flowers" or "hill full of flowers". I could still be wrong though, so I really hope that someone with an even better understanding of Greek given names (preferably a native Greek person) will be so kind as to share their thoughts and opinion with you here. In the meantime, I hope that my post has still been of some use to you! :)
"How do you pick up the threads of an old life? How do you go on... when in your heart you begin to understand... there is no going back? There are some things that time cannot mend... some hurts that go too deep... that have taken hold." ~
Frodo Baggins