Invalid
From The Art and Popular Culture Encyclopedia
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Invalid may refer to:
- Patient, a sick person
- An archaic, politically incorrect term for a person with a disability
- .invalid, a top-level Internet domain not intended for real use
As the opposite of valid:
- Validity, in logic, true premises cannot lead to a false conclusion
- Validity (statistics), a measure which is measuring what it is supposed to measure
Unless indicated otherwise, the text in this article is either based on Wikipedia article "Invalid" or another language Wikipedia page thereof used under the terms of the GNU Free Documentation License; or on research by Jahsonic and friends. See Art and Popular Culture's copyright notice.