Meaning of SPUA-B | Babel Free

Definitions

1. Initialism of Supplementary Private Use Area-B (plane 16 of Unicode, containing the 65,536 code points from U+100000 through U+10FFFF).
   abbreviation, alt-of, initialism
2. Initialism of Supplementary Private Use Area-B (the sole block in Unicode plane 16, covering the entirety of the plane).
   abbreviation, alt-of, broadly, initialism

CEFR level