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British Dictionary definitions for emacs

emacs

noun plural emacsen (ˈiːmæksən)
  1. computing a powerful computer program used for creating and editing text, functioning primarily through keyboard commands
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Word Origin

C20: from e (ditor mac (ro) s
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