Macron below
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◌̱
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Macron below, U+0331 ◌̱ COMBINING MACRON BELOW, is a combining diacritical mark used in various orthographies.
It is not to be confused with U+0320 ◌̠ COMBINING MINUS SIGN BELOW, U+0332 ◌̲ COMBINING LOW LINE, and U+005F _ LOW LINE. The difference between "macron below" and "low line" is that the latter will result in an unbroken underline when run together, compare a̱ḇc̱ vs. a̲b̲c̲ (of which only the latter should look like abc).
Unicode defines several characters for "macron below":
There are many similar marks covered elsewhere:
Various precomposed letters with a macron below are defined in Unicode:
Note that the Unicode character names of precomposed characters whose decompositions contain U+0331 ◌̱ COMBINING MACRON BELOW use "WITH LINE BELOW" rather than "WITH MACRON BELOW". Thus, U+1E07 ḇ LATIN SMALL LETTER B WITH LINE BELOW decomposes to U+0062 b LATIN SMALL LETTER B and U+0331 ◌̱ COMBINING MACRON BELOW.
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