Macron below, , is a
combining diacritical mark
In digital typography, combining characters are Character (computing), characters that are intended to modify other characters. The most common combining characters in the Latin script are the combining diacritic, diacritical marks (including co ...
that is used in various orthographies.
A non-combining form is . It is not to be confused with , and . The difference between "macron below" and "low line" is that the latter results in an unbroken underline when it is run together: compare
a̱ḇc̱ and
a̲b̲c̲ (only the latter should look like
abc).
Unicode
Macron below character
Unicode
Unicode, formally the Unicode Standard, is an information technology Technical standard, standard for the consistent character encoding, encoding, representation, and handling of Character (computing), text expressed in most of the world's wri ...

defines several characters for the macron below:
There are many similar marks covered elsewhere:
* Spacing
underscore
Underscored or underlined text.
An underscore, also called an underline, low line or low dash, is a line drawn under a segment of text. In proofreading
Proofreading is the reading (activity), reading of a galley proof or an electronic copy of ...

s, including
**
**
* Combining
underline
215px, Underscored or underlined text.
An underscore, also called an underline, low line, or low dash, is a line drawn under a segment of text. Underscoring/underlining is a proofreading
Proofreading is the reading (activity), reading of a g ...
s, including
**
**
** ;
**
**
**
*
International Phonetic Alphabet
The International Phonetic Alphabet (IPA) is an alphabet
An alphabet is a standardized set of basic written symbols
A symbol is a mark, sign, or word
In linguistics, a word of a spoken language can be defined as the smallest s ...
mark for
retracted or backed articulation:
**
**
Precomposed characters
Various
precomposed letters with a macron below are defined in Unicode:
Note that the Unicode character names of precomposed characters whose
decompositions contain use "WITH LINE BELOW" rather than "WITH MACRON BELOW". Thus, decomposes to and .
The
Vietnamese đồng
The đồng (; ; sign
A sign is an object, quality, event, or entity whose presence or occurrence indicates the probable presence or occurrence of something else. A natural sign bears a causal relation to its object—for instance, thunde ...
currency sign
A currency symbol or currency sign is a graphic symbol used as a shorthand for a currency
A currency, "in circulation", from la, currens, -entis, literally meaning "running" or "traversing" in the most specific sense is money
Image:Na ...

resembles a lower case d with a stroke and macron below: but is neither a letter nor decomposable.
See also
*
Underline
215px, Underscored or underlined text.
An underscore, also called an underline, low line, or low dash, is a line drawn under a segment of text. Underscoring/underlining is a proofreading
Proofreading is the reading (activity), reading of a g ...
*
Underscore
Underscored or underlined text.
An underscore, also called an underline, low line or low dash, is a line drawn under a segment of text. In proofreading
Proofreading is the reading (activity), reading of a galley proof or an electronic copy of ...

*
Macron
References
{{Latin script, , macron
Latin-script diacritics
Aramaic languages
Arabic language