Invalid

From Wikipedia, the free encyclopedia

Invalid may refer to:

• Patient, a sick person
• A person with a disability

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
• .invalid, a top-level domain not intended for real use.

[edit] phrases and expressions

A derogatory phrase is "you are an invalid!"

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