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  1. decistere; decisteres.


Symbol, Chemistry, Physics.
  1. darmstadtium.
  2. (formerly) dysprosium.


  1. dear/darling son (used, especially by women, in digital communications to refer to one's son): DS has no friends in school.

D, d

noun, plural D's or Ds, d's or ds.
  1. the fourth letter of the English alphabet, a consonant.
  2. any spoken sound represented by the letter D or d, as in dog, ladder, ladle, or pulled.
  3. something having the shape of a D.
  4. a written or printed representation of the letter D or d.
  5. a device, as a printer's type, for reproducing the letter D or d.


  1. daylight saving.
  2. Commerce. days after sight.Also D/S
  3. document signed.


  1. Music. from the sign.

Origin of D.S.1

From the Italian word dal segno


  1. Doctor of Science.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for ds


abbreviation for
  1. Also: ds music dal segno
  2. Detective Sergeant
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

ds in Science


  1. The symbol for darmstadtium.


  1. Abbreviation of diameter


  1. A synthetic radioactive element, first produced by bombarding lead atoms with nickel atoms. It has a mass number of 281, and its most stable isotope has a half-life of over one minute. Atomic number 110. See Periodic Table.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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