Phaethusa as a Baby Name. Meaning and Origin of Phaethusa

What is the meaning of the name Phaethusa ?

The baby name Phaethusa is a Female name , 3 syllables long and is pronounced FAY-THOO-suh (IPA: /feɪˈθuːsə/).

Phaethusa is Greek in Origin.

Phaethusa is the Latinized form of Ancient Greek Phaethousa (Φαέθουσα), built on the element phae-/phaeth- “bright, radiant,” related to phôs “light,” with the feminine participial ending -ousa. The name means “the shining one,” “she who glows,” or “radiant.”

In classical myth she appears as a daughter of Helios, paired with her sister Lampetia as guardian of the Sun’s sacred cattle on Thrinacia in Homer’s Odyssey; in other traditions she is counted among the Heliades, mourners of Phaethon transformed into poplars whose tears became amber. As a personal name outside myth it is vanishingly rare in antiquity and remains unusual today, resurfacing only in scholarly or neo-classical revivals. Variants and transliterations include Phaethousa, Phaëthusa, and Faethusa; related names are Phaethon (masculine) and Lampetia. The imagery of light and brilliance makes Phaethusa an evocative, luminous choice.

⚙ Phaethusa is absent from every birth registry and name dataset we follow. That usually points to a very rare, regional, or newly coined name. Whatever the reason, hardly anyone else has it.