Briasia is likely a modern invented English-style name formed from Bri- and a flowing suffix.
Briasia appears to be an elaborated, contemporary coinage that expands on the well-established name Briana (or Brianna), itself the feminine form of Brian, a name of ancient Celtic — likely Old Irish — origin meaning "high," "noble," or "strong." The suffix -asia transforms the name into something more expansive and flowing, giving it an almost Mediterranean or Latinate register while retaining the energetic Br- opening that makes its root immediately recognizable.
Creative elaborations of this kind flourished particularly in the African American naming tradition from the 1980s onward, where rhythmic extension and phonetic inventiveness became a form of cultural expression and individuation. The practice of adorning well-known roots with novel endings is not frivolous invention but a genuine linguistic tradition — one that mirrors how Latin suffixes once transformed Celtic roots, and how Arabic patterns transformed Persian ones. Briasia follows this impulse, taking a name that has been beloved for generations in both Gaelic and African American communities and stretching it into something singular.
The name carries the structural confidence of its Celtic ancestry — noble, elevated — while the -asia ending lends it a global, open-horizon sound. It is a name that feels like it belongs to someone who will outgrow every standard category placed around her.