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8 Words That Are Older Than You Think

debug

[dee-buhg] /diˈbʌg/
verb (used with object), debugged, debugging. Informal.
1.
to detect and remove defects or errors from.
2.
to remove electronic bugs from (a room or building).
3.
Computers. to detect and remove errors from (a computer program).
4.
to rid (a garden, plant, etc.) of insect pests, as by the application of a pesticide.
Origin
1940-1945
1940-45; de- + bug1
Related forms
debugger, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for de bug

debug

/diːˈbʌɡ/
verb (transitive) -bugs, -bugging, -bugged
1.
to locate and remove concealed microphones from (a room, etc)
2.
to locate and remove defects in (a device, system, plan, etc)
3.
to remove insects from
noun
4.
  1. something, esp a computer program, that locates and removes defects in (a device, system, etc)
  2. (as modifier): a debug program
Word Origin
C20: from de- + bug1
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
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Word Origin and History for de bug

debug

v.

1945, of machine systems, from de- + bug (n.) "glitch, defect in a machine." Meaning "to remove a concealed microphone" is from 1964. Related: Debugged; debugging.

Online Etymology Dictionary, © 2010 Douglas Harper
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3
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