Selenia derives from Greek Selene, the moon goddess, giving it a luminous celestial meaning.
Selenia is rooted in Selene, the ancient Greek goddess of the moon, whose name derives from *selas*, meaning "light" or "radiance." Selene was one of the Titan deities, a luminous figure who drove a silver chariot across the night sky, illuminating the earth below. She was distinct from Artemis, the Olympian moon goddess, and represented the moon itself rather than its symbolic associations — she was literally the light in the darkness.
Hymns to Selene appear in the Homeric tradition, praising her as "far-shooting" and "golden-throned," and her mythology intertwined with the shepherd Endymion, whom she loved so deeply she asked Zeus to grant him eternal sleep so she could gaze upon him forever. The extended form Selenia takes the goddess's name and gives it an operatic sweep, more commonly found in Italian and Spanish literary contexts, where -ia suffixes lend a Latinate fullness to Greek roots. The element selenium — the chemical discovered in 1817 — was itself named after Selene by chemist Jöns Jacob Berzelius, cementing the name's connection to both celestial radiance and the periodic table.
In fantasy literature and game design, Selenia has enjoyed recurring use as a name for ethereal or moon-touched characters, drawing on its mythological weight. Modern parents are rediscovering Selenia as a more elaborate, moonlit alternative to the popular Luna or Selene. It carries a dreamy, almost cosmic quality — a name that feels ancient and otherworldly, suited for a child born under a full moon or simply into a family that loves the stars.