Thin space

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In typography, a thin space is a space character that is usually 15 or 16 of an em in width. It is used to add a narrow space, such as between nested quotation marks or to separate glyphs that interfere with one another. It is not as narrow as the hair space. It is also used in the International System of Units and in many countries as a thousands separator when writing numbers in groups of three digits, in order to facilitate reading.[1]

In Unicode, thin space is encoded at U+2009 THIN SPACE (HTML   ·  ,  ). Unicode's U+202F NARROW NO-BREAK SPACE (HTML  ) is a non-breaking space with a width similar to that of the thin space.

In LaTeX and Plain TeX, \thinspace produces a narrow, non-breaking space.[2][3] Inside and outside of math formulae in LaTeX, \, also produces a narrow, non-breaking space.

In some versions of Microsoft Word, the symbol dialog (often available via Insert > Symbol or Insert > Special Characters), has both the thin space and the narrow no-break space available for point-and-click insertion. In Word's Symbol dialog, under font = "(normal text)", they are found in subset = "General Punctuation", Unicode character 2009 and nearby. Other word processing programs have ways of producing a thin space.

See also[edit]


  1. ^ "8th edition of the SI Brochure" (PDF). Bureau International des Poids et Mesures (BIPM). Retrieved 9 October 2019.
  2. ^ Knuth, Donald E. (1986) [Incorporates the final corrections made in 1996]. The TeXbook (PDF). Illustrations by Duane Bibby. Addison Wesley. pp. 5, 352. hdl:2027/mdp.49015000850066. ISBN 978-0-201-13447-6. LCCN 85-30845. OCLC 682395096. OL 7406778M. Archived (PDF) from the original on September 24, 2004.
  3. ^ Braams, Johannes; et al. (October 1, 2015). The LaTeX 2ε Sources (PDF) (1.2 ed.). p. 79.