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validity

[vuh-lid-i-tee] Origin

va·lid·i·ty

[vuh-lid-i-tee]
noun
1.
the state or quality of being valid: to question the validity of the argument.
2.
legal soundness or force.

Origin:
1540–50; < Late Latin validitās, equivalent to Latin valid(us) valid + -itās- -ity

non·va·lid·i·ty, noun, plural non·va·lid·i·ties.
pre·va·lid·i·ty, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
Cite This Source Link To Validity

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Validity is always a great word to know.
So is bezoar. Does it mean:
a fool or simpleton; ninny.
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
Collins
World English Dictionary
valid (ˈvælɪd)
 
adj
1.  having some foundation; based on truth
2.  legally acceptable: a valid licence
3.  a.  having legal force; effective
 b.  having legal authority; binding
4.  having some force or cogency: a valid point in a debate
5.  logic Compare invalid (of an inference or argument) having premises and conclusion so related that whenever the former are true the latter must also be true, esp (formally valid) when the inference is justified by the form of the premises and conclusion alone. Thus Tom is a bachelor; therefore Tom is unmarried is valid but not formally so, while today is hot and dry; therefore today is hot is formally valid
6.  archaic healthy or strong
 
[C16: from Latin validus robust, from valēre to be strong]
 
'validly
 
adv
 
validity
 
n
 
'validness
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

validity
c.1550, from M.Fr. validité, from L. validitatem (nom. validitas) "strength," from validus (see valid).
Online Etymology Dictionary, © 2010 Douglas Harper
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