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See also: ys, YS, yS, y's, -ys, Y's, and -yś




  1. (metrology) Symbol for the yottasecond, an SI unit of time equal to 1024 seconds.


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Etymology 1[edit]


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Proper noun[edit]


  1. (mythology) A mythical sunken city in Brittany.
See also[edit]

Etymology 2[edit]



  1. plural of Y
Usage notes[edit]
  • There is some difference of opinion regarding the use of apostrophes in the pluralization of references to letters as symbols. New Fowler's Modern English Usage, after noting that the usage has changed, states on page 602 that "after letters an apostrophe is obligatory." The 15th edition of The Chicago Manual of Style states in paragraph 7.16, "To avoid confusion, lowercase letters ... form the plural with an apostrophe and an s". The Oxford Style Manual on page 116 advocates the use of common sense.


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Wikipedia fr

Alternative forms[edit]


Proper noun[edit]

Ys f

  1. (mythology) Ys (sunken city)
    • 1955, Claude Lévi-Strauss, Tristes Tropiques (1993 edition), Plon, ISBN 978-2-259-00359-1, chapter IX, page 89:
      Rio est mordu par sa baie jusqu'au cœur; on débarque en plein centre, comme si l'autre moitié, nouvelle Ys, avait été déjà dévorée par les flots.
      1973, John and Doreen Weightman (translators), Tristes Tropiques (2011 edition), Penguin Books, ISBN 978-0-14-197073-8:
      The bay at Rio eats right into the heart of the city: you land in the centre, as if the other half, like the fabled town of Ys, had already been engulfed by waves.


See also[edit]