Collins Concise English Dictionary © HarperCollins Publishers::
DES abbreviation for (in Britain)
  1. Department of Education and Science
WordReference Random House Unabridged Dictionary of American English © 2020
des  (dā),USA pronunciation prep. 
  1. Foreign Termsused in French names as a contraction of de and the article les: François des Adrets.

  • DrugsSee  diethylstilbestrol. 

  • -des, 
  • a plural suffix appearing in loanwords from Greek:proboscides.
    • Greek, nominative plural of d- stem nouns

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