• WordNet 3.6
    • v invalidate take away the legal force of or render ineffective "invalidate a contract"
    • v invalidate show to be invalid
    • v invalidate make invalid for use "cancel cheques or tickets"
    • v invalidate declare invalid "The contract was annulled","void a plea"
    • ***
Webster's Revised Unabridged Dictionary
  • Interesting fact: The rickshaw was invented by the Reverend Jonathan Scobie, an American Baptist minister living in Yokohama, Japan, built the first model in 1869 in order to transport his invalid wife. Today it remains a common mode of transportation in the Orient.
    • v. t Invalidate To render invalid; to weaken or lessen the force of; to destroy the authority of; to render of no force or effect; to overthrow; as, to invalidate an agreement or argument.
    • ***
Century Dictionary and Cyclopedia
  • Interesting fact: Florence Nightingale served only two years of her life as a nurse. She contracted fever during her service in the Crimean War, and spent the last 50 years of her life as an invalid.
    • invalidate To render invalid; destroy the strength or validity of; render of no force or effect.
    • invalidate Specifically In law, to deprive of binding force or legal efficacy: as, fraud invalidates a contract.
    • ***
Chambers's Twentieth Century Dictionary
    • v.t Invalidate to render invalid: to weaken or destroy the force of
    • ***


  • Benjamin Franklin
    “A cheerful face is nearly as good for an invalid as healthy weather.”
  • Irish Proverb
    Irish Proverb
    “Every invalid is a physician.”
  • Samuel Butler
    “A man's friendships are, like his will, invalidated by marriage -- but they are also no less invalidated by the marriage of his friends.”
  • Oscar Wilde
    “The modern sympathy with invalids is morbid. Illness of any kind is hardly a thing to be encouraged in others.”
  • John Updike
    “That a marriage ends is less than ideal; but all things end under heaven, and if temporality is held to be invalidating, then nothing real succeeds.”


Webster's Revised Unabridged Dictionary
From Invalid null


In literature:

There is one virtue in humanity peculiarly grateful to an invalid; to him most valuable, by him most appreciated, namely, hospitality.
"Acadia" by Frederic S. Cozzens
Mr Castleton himself had become somewhat of an invalid, which made his temper even worse than before.
"Won from the Waves" by W.H.G. Kingston
There were two invalids to be seen to.
"The Day of Wrath" by Maurus Jókai
The girl was very useful to her since she had fallen into invalid ways.
"A Little Girl in Old Quebec" by Amanda Millie Douglas
Then housekeeping for a nervous invalid wife, and here she had met Mrs.
"The Girls at Mount Morris" by Amanda Minnie Douglas
The utmost care should be taken in cooking food for the invalid, so that all of the flavor and delicacy of each dish may be preserved.
"The Community Cook Book" by Anonymous
"Down South" by Oliver Optic
He worried as to whether he might possibly have been unlucky enough to draw another invalid.
"The Daughter of a Magnate" by Frank H. Spearman
Let no one call me an invalid any more.
"Robert Elsmere" by Mrs. Humphry Ward
In a corner of the room was an invalid chair on wheels.
"The Green Rust" by Edgar Wallace
On the road above stood an invalid carriage, piled up with innumerable parcels, and containing also a small boy.
"A Patriotic Schoolgirl" by Angela Brazil
The invalid lay still, looking out of the window upon the street all dressed in its Sunday afternoon emptiness.
"The Idler Magazine, Volume III, June 1893" by Various
With the invalid convalescing from fever, relapses result from inattention to these laws.
"A Treatise on Anatomy, Physiology, and Hygiene (Revised Edition)" by Calvin Cutter
And she, detecting in the invalid's eyes an unwonted look, bent over and regarded him more intently.
"The Pines of Lory" by John Ames Mitchell
In a moment the nurse was in the room; and under the care of the two the invalid was soon restored to consciousness.
"Ashton-Kirk, Criminologist" by John T. McIntyre
He is in his invalid chair by special edict, at the window, and the two visitors face him half-flanking it.
"When Ghost Meets Ghost" by William Frend De Morgan
I could not remain an invalid for ever.
"'Jena' or 'Sedan'?" by Franz Beyerlein
Mr. Gilbert gave that invalid a nod several degrees icier than the elements out doors.
"Norine's Revenge; Sir Noel's Heir" by May Agnes Fleming
Invalids often go to springs merely to find companions in suffering and thus make their condition more endurable.
"The Children of the World" by Paul Heyse
The invalid gazed sadly at him.
"The Patriot" by Antonio Fogazzaro

In poetry:

One too many, one sad and unwelcome,
That reclined in his invalid's chair,
With her pale, busy fingers still knitting
Yarn mingled with sorrow and care.
"A Legend Of Buckingham Village" by Nora Pembroke
"You'll send for me when you're in need -
My name is BROWN - your life I've saved it."
"My rival!" shrieked the invalid,
And drew a mighty sword and waved it:
"Ben Allah Achmet, or, the Fatal Tum" by William Schwenck Gilbert
No more by shaded lamp, or garden fair;--
Yet hath she left a living transcript here,
Yon helpless orphans will remember her,
And the young invalid she skilled to cheer;
"Miss Laura Kingsbury," by Lydia Howard Huntley Sigourney
The choicest of fruits in profusion appeared,
On trees that he planted, and vines that he reared;
And few things delighted him more than to send,
A rare little treat to an invalid friend.
"To The Memory of David Scott" by John Henry Kimble
Yet for the fame of all these deeds
What beggar in the invalids,
With lameness broke, with blindness smitten,
Wish'd ever decently to die,
To have been either Mezeray,
Or any Monarch he has written?
"Written In The Beginning Of Mezeray's History Of France" by Matthew Prior
Thou'lt leave my hand with eager speed
The new discovered things to see--
The old pond with its water weed
And danger-daring willow tree,
Who leans an ancient invalid
Oer spots where deepest waters be.
"To Anna Three Years Old" by John Clare

In news:

Obama camp's 'invalid' portrayal of Romney tax plan.
They'll create their own genre, especially the track 'Invalid Litter Department.
Butte College's " Imaginary Invalid" in last weekend.
Apple's Most Important Patent is Invalid.
After a runoff recount was invalidated by Judge Ruben Reyes, Sheriff Paul Scarborough will be challenged again by R.C.
Apple's Most Important Patent is Invalid .
4 flood authority members invalid .
Patent Office Says The 'Steve Jobs Patent' For iPhones And iPads Is Invalid .
Jhunan mayor's third term invalid : High Court.
AstraZeneca says Seroquel XR patent found invalid in Germany.
Punishment of Morrow mayor ' invalid .
Canadian Supreme Court Rules Pfizer's Viagra Patent Is Invalid .
In a 7-0 decision, the Supreme Court of Canada ruled Thursday that Pfizer's patent on Viagra (sildenafil) is invalid following a legal challenge by Teva.
Portion Of Indiana's Immigration Law Has Been Rendered Invalid .
Apple's Up-to-Date Program Issued Invalid Codes.

In science:

The argument presented by EPR to demonstrate the ‘incompleteness’ of Quantum Mechanics (QM) is invalidated by a logical error.
On the Einstein-Podolsky-Rosen Proof of the `Incompleteness' of Quantum Mechanics
Their discussion is based on three serious misunderstandings of the conceptual underpinnings and application of model-level Bayesian inference, which invalidate all their main conclusions.
Comment on `Tainted evidence: cosmological model selection versus fitting', by Eric V. Linder and Ramon Miquel (astro-ph/0702542v2)
Our aim in this short note is to highlight important misunderstandings that invalidate all the main conclusions of their paper.
Comment on `Tainted evidence: cosmological model selection versus fitting', by Eric V. Linder and Ramon Miquel (astro-ph/0702542v2)
This is also true but does not invalidate the practical aspect of the system. K0 length can even be made sufficiently long to frustrate any bruteforce attack at any stage of technology.
Secure sharing of random bits over the Internet
With the definitions of ‘Kuranishi space with a tangent bundle’ used in and the 2000, 2006 versions of , in which χpq is unrelated to dˆsp , the construction of virtual cycles and virtual classes is invalid.
Kuranishi homology and Kuranishi cohomology
Floer’s method for defining homology for general symplectic manifold is invalid, since we can not naturally get a Fredholm system (E , B , ¯∂J,H ) as above.
Floer Homology for Symplectomorphism
Griffiths singularity, which invalidates the Imry-Ma analysis.
Structure Factor of the 3D Random Field XY Model
Definition 1 A partial assignment to x is invalid for a clause c if either (a) all variables are unsatisfying; or (b) all variables are unsatisfying except for one index j ∈ V (c), for which xj = ∗.
On the Satisfiability Threshold and Clustering of Solutions of Random 3-SAT Formulas
The weight of an invalid partial assignment is 0.
On the Satisfiability Threshold and Clustering of Solutions of Random 3-SAT Formulas
However, EMT fails near the percolation threshold, where large fluctuations arise that invalidate the underlying assumptions of EMT.
Fractal and Multifractal Scaling of Electrical Conduction in Random Resistor Networks
This implies that our initial assumption that the limit exists is invalid. sLQC does not admit a continuum limit; it is a fundamentally discrete theory.
Robustness of key features of loop quantum cosmology
In general, as previously noted, it very seldom occurs that γj and βj have a different sign, and we found that that extrapolating them to the same positive value does not invalidate significantly the accuracy of the extrapolation.
Turbo charging time-dependent density-functional theory with Lanczos chains
Quite open question is, however, the origin of the breakdown of the LSR, or more precisely which part of the original proof [1, 2, 5] becomes invalid within the MH insulator.
Breakdown of the Luttinger sum rule within the Mott-Hubbard insulator
The “unobservable mental variable” I introduce does not imply probabilities beyond the quantum ones, nor invalidates any law of Nature.
Quantum randomness can be controlled by free will -a consequence of the before-before experiment
An experiment capable of validating or invalidating this claim is suggested.
The Twin Paradox Revisited and Reformulated -- On the Possibility of Detecting Absolute Motion