Adjective
Lacking a definition or value.
Usage- not-comparable
- Examples
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We slid into our office, past two women discussing the "X factor," an apparently undefined quality their firm felt they lacked.
That does not have a logically sound meaning within a specific formal system and is thus not assigned an interpretation.
Usage- not-comparable
- Examples
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The result of division by zero is undefined.
Within the set of real numbers, the square root of a negative number is undefined.
That behaves unreliably due to dependence on an uninitialized value or inconsistently ported code.
Usage- not-comparable
- Examples
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In C, relying on a variable's value right after a malloc call is undefined behvaior.
Noun
An undefined value.
- Examples
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[Option:] · [PDP11:] F [BSD:] · [XE 2.3:] [1] [XE 3.0:] · [SIII:] · [COFF:] · [meaning:] make undefineds global
More examples (1)
Every operation is defined completely either by delivering a value of some type depending only on the types of its operands or by causing some defined exception; there are no ‘undefineds’ in Ten15.
The Array object has these commonly-used properties: • .length: the number of items including undefineds.
Adjective
not precisely limited, determined, or distinguished
- Synonyms
- Antonyms
- Examples
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an undefined term
undefined authority
More examples (3)
some undefined sense of excitement
vague feelings of sadness
a vague uneasiness