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validity - 3 dictionary results
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va⋅lid⋅i⋅ty

  [vuh-lid-i-tee]
Use validity in a Sentence
–noun
1. the state or quality of being valid: to question the validity of the argument.
2. legal soundness or force.
Origin:
1540–50; < LL validitās, equiv. to L valid(us) valid + -itās- -ity
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To validity
val·id   (vāl'ĭd)   
adj.  
  1. Well grounded; just: a valid objection.
  2. Producing the desired results; efficacious: valid methods.
  3. Having legal force; effective or binding: a valid title.
  4. Logic
    1. Containing premises from which the conclusion may logically be derived: a valid argument.
    2. Correctly inferred or deduced from a premise: a valid conclusion.
  5. Archaic Of sound health; robust.

[French valide, from Old French, from Latin validus, strong, from valēre, to be strong; see wal- in Indo-European roots.]
va·lid'i·ty, val'id·ness n., val'id·ly adv.
Synonyms: These adjectives describe assertions, arguments, conclusions, reasons, or intellectual processes that are persuasive because they are well founded. What is valid is based on or borne out by truth or fact or has legal force: a valid excuse; a valid claim.
What is sound is free from logical flaws or is based on valid reasoning: a sound theory; sound principles.
Something cogent is both sound and compelling: cogent testimony; a cogent explanation.
Convincing implies the power to dispel doubt or overcome resistance or opposition: convincing proof.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Validity

Va*lid"i*ty\, n. [Cf. F. validit['e], L. validitas strength.]

1. The quality or state of being valid; strength; force; especially, power to convince; justness; soundness; as, the validity of an argument or proof; the validity of an objection.

2. (Law) Legal strength, force, or authority; that quality of a thing which renders it supportable in law, or equity; as, the validity of a will; the validity of a contract, claim, or title.

3. Value. [Obs.] "Rich validity." --Shak.
Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.
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