• WordNet 3.6
    • n perpetuity the property of being perpetual (seemingly ceaseless)
    • ***

Additional illustrations & photos:

Hybrid Perpetual. FRAU KARL DRUSCHKI Hybrid Perpetual. FRAU KARL DRUSCHKI
Hybrid Perpetual. ULRICH BRUNNER Hybrid Perpetual. ULRICH BRUNNER
Hybrid Perpetual. GUSTAVE PIGANEAU Hybrid Perpetual. GUSTAVE PIGANEAU

Webster's Revised Unabridged Dictionary
  • Interesting fact: Roulette was invented by the French mathematician Blaise Pascal. It was a by-product of his experiments with perpetual motion.
    • Perpetuity (Annuities) A perpetual annuity.
    • Perpetuity (Law) Duration without limitations as to time.
    • Perpetuity Endless time. "And yet we should, for perpetuity , go hence in debt."
    • Perpetuity Something that is perpetual.
    • Perpetuity (Annuities) The number of years in which the simple interest of any sum becomes equal to the principal.
    • Perpetuity (Annuities) The number of years' purchase to be given for an annuity to continue forever.
    • Perpetuity (Law) The quality or condition of an estate by which it becomes inalienable, either perpetually or for a very long period; also, the estate itself so modified or perpetuated.
    • Perpetuity The quality or state of being perpetual; as, the perpetuity of laws. "A path to perpetuity of fame.""The perpetuity of single emotion is insanity."
    • ***
Century Dictionary and Cyclopedia
    • n perpetuity The state or character of being perpetual; endless duration; continued uninterrupted existence, or duration through the ages or for an indefinite period of time: as,the perpetuity of laws and institutions.
    • n perpetuity Something of which there will be no end; something lasting forever or for an indefinitely long time.
    • n perpetuity In law: A limitation intended to be unalterable and of indefinite duration; a disposition of property which attempts to make it inalienable beyond certain limits fixed or conceived as being fixed by the general law. Pollock. The evils incident to rendering any specific piece of land or fund inalienable, and thus shutting it out from the general circulation of property, early led the courts to hold provisions for a perpetual suspension of the power of alienation to be void. The desire of owners of estates to perpetuate the wealth of the family led to attempts to create forfeitures and gifts over to other persons, by way of shielding the successor in the title from temptation to alienate; and as the right to create life-estates and trusts, and to add gifts over to other persons upon the termination of precedent estates, could not be wholly denied, the question has been what temporary suspension of the power of alienation is reasonable and allowable, and what is too remote and to be held void as “tending to create a perpetuity.” (See remoteness.) The limit now generally established for this purpose in varying forms is substantially to the effect that no disposition of real property or creation of an estate therein is valid if it suspends the absolute power of alienation for more than a period measured by a life or lives in being plus 21 years and 9 months. Hence, since literal perpetuities are no longer known, except in the law of charities, etc., the phrase rule against perpetuities has come to mean in ordinary usage the rule against future estates which are void for remoteness as “tending to create a perpetuity.”
    • n perpetuity Duration to all futurity; exemption from intermission or ceasing.
    • n perpetuity In the doctrine of annuities, the number of years in which the simple interest of any principal sum will amount to the same as the principal itself; or the number of years' purchase to be given for an annuity which is to continue forever; also, the annuity itself.
    • ***
Chambers's Twentieth Century Dictionary
    • Perpetuity state of being perpetual: endless time: duration for an indefinite period: something lasting for ever: the sum paid for a perpetual annuity: the annuity itself
    • ***


  • Alice Meynell
    Alice Meynell
    “If there is a look of human eyes that tells of perpetual loneliness, so there is also the familiar look that is the sign of perpetual crowds.”
  • Samuel Johnson
    “No man likes to live under the eye of perpetual disapprobation.”
  • Ogden Nash
    “A door is what a dog is perpetually on the wrong side of.”
  • Sting
    “I exist in a state of almost perpetual hysteria.”
  • Ralph Waldo Emerson
    “I can reason down or deny everything, except this perpetual Belly: feed he must and will, and I cannot make him respectable.”
  • Orison Swett Marden
    “If you do not feel yourself growing in your work and your life broadening and deepening, if your task is not a perpetual tonic to you, you have not found your place.”


Webster's Revised Unabridged Dictionary
L. perpetuitas,: cf. F. perpétuité,


In literature:

Grace was in a state of perpetual wonder, everything amazed her.
"The Captives" by Hugh Walpole
Here is a perpetual struggle in prospect, for a man who is already worn out.
"Poor Miss Finch" by Wilkie Collins
This man was perpetually giving a touch of the whip to her curiosity to keep it alert.
"The Garden Of Allah" by Robert Hichens
I am a poor creature, plagued perpetually by hard work, and with few hours for recreation.
"Haydn" by J. Cuthbert Hadden
A free woman who intermarried with a slave condemned herself and offspring to perpetual bondage.
"The Rise of the Dutch Republic, Volume I.(of III) 1555-66" by John Lothrop Motley
Over his own head impended perpetual shame, over the fatherland perpetual woe, if the congress should now refuse the necessary supplies.
"The Rise of the Dutch Republic, Volume II.(of III) 1566-74" by John Lothrop Motley
In the Perpetual Edict the Prince saw his work undone.
"The Rise of the Dutch Republic, Volume III.(of III) 1574-84" by John Lothrop Motley
He was also in perpetual dread of the Grand Turk.
"History of the United Netherlands, 1584-86, Vol. I. (of IV) Complete" by John Lothrop Motley
To maintain its existence against perpetual menace required the exertion of perpetual skill.
"History of the United Netherlands, 1590-1599, Vol. III. Complete" by John Lothrop Motley
Nearly everything solid had been already scooped away in the perpetual delving.
"History of the United Netherlands, 1600-09, Vol. IV. Complete" by John Lothrop Motley

In poetry:

The tree of life this paradise
Doth always beautify,
'Cause of our health it is the rise
And perpetuity.
"Of Judgement" by John Bunyan
One broad, perpetual riot
Enfolds me night and day.
You think my life is quiet?
You don't know what you say.
"The Riot" by Gamaliel Bradford
And hence one emblems in its beauteous being
The memory of a Joy that in my heart
Flowed gratefully apart;
The other, to my spiritual seeing,
The perpetuity of Love’s white grace
Yet in some heavenly place.
"Emblems" by Charles Harpur
And yet there often comes to me,
I know not how, from whence nor where;
But comes the thought perpetually,
That justice is not deft to prayer.
Though it seems barren, yet for me,
With good is pregnant destiny.
"Lines To Caste" by Samuel Alfred Beadle
Unworthy Thee, whom highest heaven,
Whom heaven of heavens, cannot contain;
Whose greatness human thought hath striven
To compass, or conceive in vain.
Yet in thy house my heart shall be,
Hallowing Thy name perpetually."
"The House of God" by John Bowring
Go, rose, since go you must,
Flowerless and chill the winter draweth nigh;
Closed are the blithe and fragrant lips which made
All summer long perpetual melody.
Cheerless we take our way, but not afraid:
Will there not be more roses--by and by?
"A Farewell" by Susan Coolidge

In news:

Taylor Swift may want to set her face to perpetual stun: the 22-year-old pop/country star just sold 1.2 million copies of her new album Red in its first week.
Since its announcement three years ago, the Chevrolet Volt has seemed like one of those perpetually out-of-reach technologies, like fusion power or flying cars.
Cleansing the Damned is a perpetual work in progress that attempts to push the boundaries of genre and musical stereotype.
I bowed my head in prayer before responding to the Oct 12 column entitled "A faith in perpetual transition" by George B Reed, Jr pertaining to the Baptist faith.
Dear editor I bowed my head in prayer before responding to the Oct 12 column entitled "A faith in perpetual transition" by George B Reed Jr pertaining to the.
Yet The Associated Press-mtvU Poll, released Thursday, also found that being perpetually connected comes at a cost.
The Perpetual Failure to Understand Obama's Double Consciousness .
It's that time of year when ardent bakers have their stand mixers perpetually at the ready.
Corn-syrup producers sued on Sept 4, stating that sugar producers attempted "to vilify or perpetuate the vilification of" their product.
Finally, Robert Pattinson is throwing aside his image as the teen sex icon perpetuated by his continuing involvement in the 'Twilight' series.
When it comes to politics, the state synonymous with perpetual youth has gone gray at the top.
LOS ANGELES—When it comes to politics, the state synonymous with perpetual youth has gone gray at the top.
Weather permitting Saturday, explorer and filmmaker James Cameron could take his Deepsea Challenger to the bottom of the world, a place of perpetual cold, darkness, and abiding mystery.
Landowner Matt Mulliniks, left, confers with Doug Rodman of the Land Trust for Tennessee about the conservation easement contract that's now preserving his property in perpetuity.
In his Dec 17 letter to the Gazette, "Bringing back trolleys would be folly," James Johnson, no relation to me, perpetuates some misinformation regarding the MBTA's abandonment of E-Line streetcar service in Boston that requires correction.

In science:

The method of this paper, worked out in and , hinges on getting first a momenttype result for perpetuities (here Theorem 1.2) and then translating it into the framework of branching random walks.
A log-type moment result for perpetuities and its application to martingales in supercritical branching random walks
We thus see that Z∞ may also be viewed as the perpetuity generated by i.i.d. copies of (Πm , Q(m) ) for any fixed m ≥ 1.
A log-type moment result for perpetuities and its application to martingales in supercritical branching random walks
Connection with perpetuities Next we have to make the connection with perpetuities.
A log-type moment result for perpetuities and its application to martingales in supercritical branching random walks
With a zero threshold, the component sites would be always in an active state, with the system perpetually undergoing avalanches involving many (interacting) sites but little stored energy.
Field-control, phase-transitions, and life's emergence
In fact, the atoms are constantly driven towards the dark state by the perpetual coupling field, and those that are slow enough can adiabatically follow the local dark-state c |1i − Ω∗ (r) |2i .
Coherent Diffusion of Polaritons in Atomic Media