Definition of hair space in English:

hair space

Syllabification: hair space

noun

Printing
A very thin space between letters or words.
More example sentences
  • Em dashes look downright stupid without the hair space on either side: normal spaces are much, much too wide, while no space at all makes the text look cramped.
  • I'd like to type hair spaces either side of em dashes and wonder whether there was a system-wide shortcut that I could use.
  • A hair space is used when extremely small spaces are needed.

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Pronunciation: ˌōlēˈajənəs
adjective
rich in, covered with, or producing oil; oily