Apollonia \a-pollo-nia, ap(ol)-lonia\ as a girl's name is pronounced ah-poh-LONE-yah. It is of Greek origin. Latin feminine form of the Greek male name Apollonios, from Apollo. Mythology: Apollo was the Greek god of sunlight, music, and poetry. Saint Apollonia was an elderly third-century Christian martyr. In art she is often portrayed with a pair of tongs and an outsized molar.
For more information, see also the related name Abellona.