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Definition of undefined - 2 dictionary results

un⋅de⋅fined

  [uhn-di-fahynd]
Use undefined in a Sentence
–adjective
1. without fixed limits; indefinite in form, extent, or application: undefined authority; undefined feelings of sadness.
2. not given meaning or significance, as by a definition; not defined or explained: an undefined term.
Origin:
1605–15; un- 1 + defined

Related forms:
un⋅de⋅fin⋅ed⋅ly  [uhn-di-fahy-nid-lee, -fahynd-] , adverb
un⋅de⋅fin⋅ed⋅ness, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Word Origin & History

undefined 
1611, from un- (1) "not" + pp. of define (v.).
Online Etymology Dictionary, © 2001 Douglas Harper
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