• The perils of Cycling
    The perils of Cycling
  • WordNet 3.6
    • v cycle recur in repeating sequences
    • v cycle ride a bicycle
    • v cycle ride a motorcycle
    • v cycle pass through a cycle "This machine automatically cycles"
    • v cycle cause to go through a recurring sequence "cycle the laundry in this washing program"
    • n cycle a wheeled vehicle that has two wheels and is moved by foot pedals
    • n cycle a single complete execution of a periodically repeated phenomenon "a year constitutes a cycle of the seasons"
    • n cycle a periodically repeated sequence of events "a cycle of reprisal and retaliation"
    • n cycle a series of poems or songs on the same theme "Schubert's song cycles"
    • n cycle the unit of frequency; one hertz has a periodic interval of one second
    • n cycle an interval during which a recurring sequence of events occurs "the never-ending cycle of the seasons"
    • ***

Additional illustrations & photos:

Pedestrian. I hear Brown has taken to cycling Pedestrian. I hear Brown has taken to cycling
William cycling over the picnic-blanket William cycling over the picnic-blanket

Webster's Revised Unabridged Dictionary
  • Interesting fact: In the Netherlands, there are special traffic lanes for bicycles. There are approximately 17,000 kms of cycle lanes with special bicycle traffic lights.
    • Cycle A bicycle or tricycle, or other light velocipede.
    • Cycle (Technology) A complete positive and negative, or forward and reverse, action of any periodic process, such as a vibration, an electric field oscillation, or a current alternation; one period.
    • Cycle A motorcycle.
    • Cycle (Thermodynamics) A series of operations in which heat is imparted to (or taken away from) a working substance which by its expansion gives up a part of its internal energy in the form of mechanical work (or being compressed increases its internal energy) and is again brought back to its original state.
    • Cycle An age; a long period of time. "Better fifty years of Europe than a cycle of Cathay."
    • Cycle An imaginary circle or orbit in the heavens; one of the celestial spheres.
    • Cycle An interval of time in which a certain succession of events or phenomena is completed, and then returns again and again, uniformly and continually in the same order; a periodical space of time marked by the recurrence of something peculiar; as, the cycle of the seasons, or of the year. "Wages . . . bear a full proportion . . . to the medium of provision during the last bad cycle of twenty years."
    • Cycle An orderly list for a given time; a calendar. "We . . . present our gardeners with a complete cycle of what is requisite to be done throughout every month of the year."
    • Cycle (Bot) One entire round in a circle or a spire; as, a cycle or set of leaves.
    • Cycle The circle of subjects connected with the exploits of the hero or heroes of some particular period which have served as a popular theme for poetry, as the legend of Arthur and the knights of the Round Table, and that of Charlemagne and his paladins.
    • Cycle To pass through a cycle{2} of changes; to recur in cycles.
    • Cycle To ride a bicycle, tricycle, or other form of cycle.
    • ***
Century Dictionary and Cyclopedia
  • Interesting fact: A small drip from a faucet can waste up to 50 gallons of water daily, which is enough water to run a dishwasher twice on a full cycle
    • n cycle An imaginary circle or orbit in the heavens.
    • n cycle A round of years or a recurring period of time used as a larger unit in reckoning time; especially, a period in which certain astronomical phenomena go through a series of changes which recur in the corresponding parts of the next period.
    • n cycle Any long period of years; an age.
    • n cycle Any round of operations or events; a series which returns upon itself; specifically, in physics, a series of operations by which a substance is finally brought back to the initial state.
    • n cycle In literature, the aggregate of legendary or traditional matter accumulated round some mythical or heroic event or character, as the siege of Troy and the Argonautic expedition of antiquity, or the Round Table, the Cid, and the Nibelungs of medieval times, and embodied in epic or narrative poetry or in romantic prose narrative.
    • n cycle In botany: In the theory of spiral leaf-arrangement, a complete turn of the spire which is assumed to exist.
    • n cycle A closed circle or whorl of leaves.
    • n cycle In corals, a set of septa of equal length. See septum.
    • n cycle As used by the old medical sect of Methodists, an aggregate of curative means continued during a certain number of days, usually nine.
    • n cycle A bicycle or tricycle; a “wheel.”
    • cycle To occur or recur in cycles.
    • cycle [See cycle, n., 9.] To ride or take exercise on a bicycle or tricycle.
    • n cycle A false spelling of sickle. Fuller.
    • n cycle In electricity, the time of one complete wave, or double reversal, of alternating currents. Frequencies are usually denoted in cycles per second. See alternating.
    • n cycle In chem., same as ring, n. 18.
    • n cycle In mech., a succession of conditions, operations, or phases which follow each other in a determinate order; specifically, in gas or internal-combustion motors, the successive changes experienced by the mixture of fuel and air in the motor cylinder. In the cycle proposed by Beau de Rochas, now better known as the Otto cycle, the mixture of fuel and air is drawn into the cylinder by an aspirating stroke of the piston and the mixture is compressed by the return of the piston; then this compressed mixture is ignited by an electric spark, or other means, and the expansion due to the heating of the air by the combustion of the gas causes a rise in pressure and exerts the forward effort on the piston during the second outward stroke; during this increase of volume the pressure is lowered. On the second return stroke, the exhaust-valve is opened and the burned gases are expelled during this fourth traverse. Then the cycle repeats itself. This cycle may be realized in one cylinder; or aspiration and compression may be done in one cylinder, and the working-stroke and following exhaust take place in another; or, in the two-phase cycle, or two-cycle motor, the intake or aspiration phase may take place just at the end of the working-stroke, the exhaust not occupying the time of a piston traverse. This makes one working-stroke for each complete revolution of the crank. The cycles may differ in having the compression and expansion isothermal or adiabatic, the heating at constant volume or at constant pressure, and the cooling phenomena isothermal or adiabatic. The compression may be omitted, although efficiency is increased by-retaining it. The cycle of the gas-mixture should not be confounded with the mechanical arrangements for realizing and utilizing it.
    • n cycle In mathematics: In geometry, a closed path in a multiply connected region.
    • n cycle In function-theory, the set of homologous corners of a given region (in substitution-groups).
    • n cycle In meteorology, the repetition of some general atmospheric phenomenon at approximately regular intervals. The more prominent cycles are the 35-year period, deduced by Bruckner; the sun-spot period, which varies between seven, and thirteen years following the sun-spots; the 26.6 day period, deduced by Professor F. H. Bigelow; the lunar or tidal periods, the existence of which has been asserted by many persons but which are still uncertain; a 7-year period in the rainfall of Illinois, announced by Dr. Cyrus Thomas; the geological periods of indefinite and irregular extent, discussed by many geologists; the sun-spot period in the tropical temperatures combined with a retardation further away from the equator, as deduced by Koeppen; the annual temperature-wave carried slowly from the tropics to the polar regions by the ocean current or surface drift; and the diurnal and annual periods, carried from the surface of the ground downward by the conduction of heat through the ground.
    • ***
Chambers's Twentieth Century Dictionary
  • Interesting fact: Every eleven years the magnetic poles of the sun switch. This cycle is called "Solarmax".
    • n Cycle sī′kl a period of time in which events happen in a certain order, and which constantly repeats itself: an imaginary circle or orbit in the heavens: a series of poems, prose romances, &c., centring round a figure or event—also Cy′clus: an abbreviation for bicycle and tricycle
    • v.i Cycle to move in cycles: to ride or take exercise on a bicycle or tricycle
    • ***


  • H.G. Wells
    “Cycle tracks will abound in Utopia.”
  • Marcus Aurelius
    “Each thing is of like form from everlasting and comes round again in its cycle.”
  • W. Clement Stone
    “Events tend to recur in cycles...”
  • Publius Cornelius Tacitus
    “In all things there is a law of cycles.”
  • Oscar Wilde
    “Only mediocrities progress. An artist revolves in a cycle of masterpieces, the first of which is no less perfect than the last.”
  • Raoul Vaneigem
    “Work to survive, survive by consuming, survive to consume: the hellish cycle is complete.”


Webster's Revised Unabridged Dictionary
F. ycle, LL. cyclus, fr. Gr. ky`klos ring or circle, cycle; akin to Skr. cakra, wheel, circle. See Wheel


In literature:

The Scriptures assert invariable natural law, and constantly recurring cycles in nature.
"The Origin of the World According to Revelation and Science" by John William Dawson
The children of these again, the great-grandchildren of the first cycle, will form a fourth.
"The Origin of the Family Private Property and the State" by Frederick Engels
The name of indiction is given to each one of the four weeks of years composing the cycle of 52 years.
"Incidents of Travel in Yucatan, Vol. I." by John L. Stephens
Schumann, unlike Schubert and Mendelssohn, wrote songs often sad and even gloomy, but many of them, especially in his song cycles, are gems.
"The Complete Club Book for Women" by Caroline French Benton
There is at present (February, 1878) the great depression of trade which marks the completion of one cycle and the commencement of a new one.
"Political economy" by W. Stanley Jevons
The duration of this great cycle was variously estimated.
"Principles of Geology" by Charles Lyell
The cycle of Old Testament subjects is equally limited.
"Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 5" by Various
The names of twelve animals denote the duodenary cycle.
"Travels in Tartary, Thibet, and China During the years 1844-5-6. Volume 2 [of 2]" by Evariste Regis Huc
As the days passed I exerted every precaution, yet I followed him everywhere, sometimes using the car, and at others the motor-cycle.
"Spies of the Kaiser" by William Le Queux
Afterwards he sent to let her know that he would be obliged to stay in town till the evening; then he would cycle out.
"Mary" by Bjornstjerne Bjornson

In poetry:

The cycles of time, still murmurs
The story of love each day:
"I held in death the Eternal,
In the long and the far-away."
"Good Friday" by Abram Joseph Ryan
A thousand years are but a day
When reckoned on the wrinkled earth;
And who among the wise shall say
What cycle saw the primal birth
"Fame" by Hanford Lennox Gordon
Oh, life is a glorious cycle of song,
A medley of extemporanea;
And love is a thing that can never go wrong;
And I am Marie of Roumania.
"Comment" by Dorothy Parker
None may know. Through blood-stained cycles
We have thus far made our way:
Of the unknown depths beneath us
We are nothing but the spray.
"Discouragement" by John Lawson Stoddard
With justice, therefore, comes the pain
That o'er the tortured world extends;
And hopeful is the lessening stain,
As each life-cycle ends.
"Reincarnation" by John Lawson Stoddard
This her memorial while the sun
Traverses the blue dome of heaven,
Fulfilling while time's cycles run
Christ's prophecy which then was given.
"Ministering Women" by Nancy Rebecca Campbell Glass

In news:

After taking the dogs for a run on her bike Coco decided the heat was too much and cycled the dogs around the boardwalk in New Jersey on a people carrier.
Custom Built Vincent Black Lightning- Jeff Decker- World's Coolest Bikes – Cycle World.
Falling In, Falling Out: Love's Cycle Of Rebirth .
Salmon life cycle on display.
Robert Lepage's Production of Wagner's Ring Cycle.
Ring Cycle airs on THIRTEEN's Great Performances at the Met September 11th-14th at 8 pm on WTVP-HD.
The Conference Board reports US business cycle on upswing.
Foes of Prospect Park West cycle path threaten new suit.
Antonneau pedals to win in USA Cycling Cyclo- cross championships.
Despite damning USADA report on doping, Lance Armstrong has his backers on cycling tour.
Richard Quest tests out the bicycle-friendly streets of Copenhagen, where they're paving the way for cycling cities.
Cycle Gear Opens in Illinois November 19, 2012.
Benicia, Calif.-based Cycle Gear Inc has opened its 98th retail store in Schaumburg, Ill.
Dead Center Cycles Fairing installed on a Haley-Davidson Heritage Softail.
Breaking the Cycle of Restless Nights.

In science:

Before describing cycle index techniques for the finite classical groups, we mention that the cycle index techniques here are modelled on similar techniques for the study of conjugacy class functions on the symmetric groups.
Random matrix theory over finite fields: a survey
G| Xπ∈G Yi≥1 and is called a cycle index because it stores information about the cycle structure of elements of G.
Random matrix theory over finite fields: a survey
This allows one to study conjugacy class functions of random permutations (e.g. number of fixed points, number of cycles, the order of a permutation, length of the longest cycle) by generating functions.
Random matrix theory over finite fields: a survey
We refer the reader to [Ko] for results in this direction using analysis and to [ShLl] for results about cycle structure proved by a probabilistic interpretation of the cycle index generating function.
Random matrix theory over finite fields: a survey
According to Lemma 1.2.6 of James and Kerber (1981), two elements of Sn are conjugate if and only if their cycle types are identical; hence, there is a one-to-one correspondence between these cycle type vectors and conjugacy classes of Sn .
Random walks on wreath products of groups