Quick answer
Rhea is a girl name meaning "to flow; ground".
Pronunciation: Classical Greek /r̥é.aː/; English /ˈɹi.ə/; English /ˈɹeɪ.ə/; Latin /ˈreː.a/.
Meaning and history
Meaning unknown, perhaps related to ῥέω (rheo) meaning "to flow" or ἔρα (era) meaning "ground". In Greek mythology Rhea was a Titan, the wife of Cronus, and the mother of the Olympian gods Zeus, Poseidon, Hades, Hera, Demeter and Hestia. Also, in Roman mythology a woman named Rhea Silvia was the mother of Romulus and Remus, the legendary founders of Rome.
Notes and context
Usage: greek mythology, roman mythology | Ancient Greek: Ῥέα