undefined
1
5.7
- adjective
- /ˌʌn.dɪˈfaɪnd/
- Specialized
:
indefinido
- When the variable is not initialized, it is considered undefined in the program.
Examples
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So our tangent line has a slope that's undefined, so our tangent line is vertical.
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In mathematics, a singularity is what happens when you divide by zero; the answer is infinite, undefined.
Academic text (1991) -
And with an undefined amount of time.
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But for right now, you guys just know them as undefined values, OK?
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So everything here you're going to start with when you have an undefined weight.
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Data races have undefined behavior; they are errors in the same sense as an out-of-bounds array access.
Academic text (2012) -
One way is to use the default column headers provided by QA Wizard Pro and access values until an undefined column is reached.
Blog text (8) -
In more extreme cases, for example, when the actual physical machine runs out of memory, the behavior of the Java run-time system is undefined and certainly nowhere near being failsafe.
Academic text (2011) -
I'm getting some odd error messages that I can't quite understand (the variable isn't undefined on line 29)!
Blog text (6) -
For example, when a Python program uses an undefined variable (the C equivalent of a NULL pointer), the interpreter detects this condition and gracefully exits.
Academic text (2011)
Synonyms
27
4.8
Something that does not give clear details
3
3.7
Not given a job, task, or place to go
Not given a starting value in a computer program
Antonyms
How Defined
- Specialized
1
5.7
809
1.0
Surface Forms
Morphology
undefined = defined (transparent) = un + define + ed
In computing the adjective simply means 'not defined' (not assigned a value), a direct negation of 'defined' using the productive prefix 'un-'.
Etymology
Undefined comes from the same parts, un- 'not' and define 'to set a limit' or 'to give a value'. So, in computing, undefined means a value or item has not been given a value or is not known to the program.