Petra
[ˈpɛtrə]Meaning
feminine form of Peter, from the Greek petra, rock or stone
Background Story
Petra is the feminine form of Peter, derived from the Greek word petra, meaning rock or stone. It came into regular use in the 19th century and is used in French, Greek and Italian. The name is also borne by an ancient city in Jordan, now an archaeological site.

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Niobe
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Elara
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Andromeda
A princess in Greek mythology and a galaxy name
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Askja
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