Vulgar Fraction Zero Thirds at U+2189 represents the fraction zero over three, a value mathematically equal to zero but written in fraction form. It belongs to the Number Forms block, which contains precomposed fraction and numeral characters intended for compatibility with established text conventions. Its practical use is narrow: it appears when a document must preserve the exact visual or textual form “0/3” as a single vulgar fraction character. That can matter in encoded samples, font tests, Unicode charts, normalization tests, or data sets that distinguish a displayed fraction from the arithmetic value zero. In ordinary mathematics, education, science, finance, and publishing, writers almost always use plain zero or a built-up fraction instead. Because zero thirds has no special numerical meaning beyond zero, this character is chiefly useful for completeness within the set of Unicode vulgar fractions rather than for everyday calculation or notation.