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DGRBM

Proper name: PLEI'ONE (Πληϊόνη), a daughter of Oceanus, and mother of the Pleiades by Atlas. (Apollod. iii. 10. § 1 ; Pind. Fragm. 53 ; comp. Atlas ; Pleiades.) (Wikisource | public domain)
Dictionary of Greek and Roman Biography and Mythology (ed. William Smith 1870), Wikisource | public domain

Lewis Short

Plēĭŏnē (noun F) : Πληϊόνη.
* A daughter of Oceanus and Tethys, wife of Atlas and mother of the Pleiades: hinc sata Pleione cum caelifero Atlante,Ov. F. 5, 83; Hyg. Astr. 2, 21: Pleiones nepos,i.e. Mercury, son of Maia,Ov. H. 16, 62; Val. Fl. 1, 738.
* The constellation of the Pleiades, Val. Fl. 2, 67.
Charlton T. Lewis, Charles Short, A Latin Dictionary
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