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spiral    音标拼音: [sp'ɑɪrəl]
n. 螺旋形之物
a. 螺旋形的,盘旋的
vi. 成螺旋状下降,成螺旋状上升

螺旋形之物螺旋形的,盘旋的成螺旋状下降,成螺旋状上升

spiral
adj 1: in the shape of a coil [synonym: {coiling}, {helical},
{spiral}, {spiraling}, {volute}, {voluted}, {whorled},
{turbinate}]
n 1: a plane curve traced by a point circling about the center
but at increasing distances from the center
2: a curve that lies on the surface of a cylinder or cone and
cuts the element at a constant angle [synonym: {helix}, {spiral}]
3: a continuously accelerating change in the economy
4: ornament consisting of a curve on a plane that winds around a
center with an increasing distance from the center [synonym:
{spiral}, {volute}]
5: a structure consisting of something wound in a continuous
series of loops; "a coil of rope" [synonym: {coil}, {spiral},
{volute}, {whorl}, {helix}]
6: flying downward in a helical path with a large radius
v 1: to wind or move in a spiral course; "the muscles and nerves
of his fine drawn body were coiling for action"; "black
smoke coiling up into the sky"; "the young people gyrated
on the dance floor" [synonym: {gyrate}, {spiral}, {coil}]
2: form a spiral; "The path spirals up the mountain"
3: move in a spiral or zigzag course [synonym: {corkscrew},
{spiral}]

Spiral \Spi"ral\, n. [Cf. F. spirale. See {Spiral}, a.]
1. (Geom.) A plane curve, not reentrant, described by a
point, called the generatrix, moving along a straight line
according to a mathematical law, while the line is
revolving about a fixed point called the pole. Cf.
{Helix}.
[1913 Webster]

2. Anything which has a spiral form, as a spiral shell.
[1913 Webster]

{Equiangular spiral},a plane curve which cuts all its
generatrices at the same angle. Same as {Logarithmic
spiral}, under {Logarithmic}.

{Spiral of Archimedes}, a spiral the law of which is that the
generatrix moves uniformly along the revolving line, which
also moves uniformly.
[1913 Webster]


Spiral \Spi"ral\, a. [Cf. F. spiral. See {Spire} a winding
line.]
1. Winding or circling round a center or pole and gradually
receding from it; as, the spiral curve of a watch spring.
[1913 Webster]

2. Winding round a cylinder or imaginary axis, and at the
same time rising or advancing forward; winding like the
thread of a screw; helical.
[1913 Webster]

3. (Geom.) Of or pertaining to a spiral; like a spiral.
[1913 Webster]

{Spiral gear}, or {Spiral wheel} (Mach.), a gear resembling
in general a spur gear, but having its teeth cut at an
angle with its axis, or so that they form small portions
of screws or spirals.

{Spiral gearing}, a kind of gearing sometimes used in light
machinery, in which spiral gears, instead of bevel gears,
are used to transmit motion between shafts that are not
parallel.

{Spiral operculum}, an operculum whih has spiral lines of
growth.

{Spiral shell}, any shell in which the whorls form a spiral
or helix.

{Spiral spring}. See the Note under {Spring}, n., 4.
[1913 Webster]

218 Moby Thesaurus words for "spiral":
Milky Way, O-shaped, Via Lactea, acrobatics, aerobatics, ambagious,
anfractuous, arise, ascend, aspire, backhanded, bank, banking,
barred spiral, barred spiral galaxy, become airborne, chandelle,
circle, circling, circuit, circuiteer, circuition, circuitous,
circuitousness, circuitry, circular, circularity, circulate,
circulation, circumambience, circumambiency, circumambulate,
circumambulation, circumflexion, circumlocution, circummigrate,
circummigration, circumnavigate, circumnavigation, circumvent,
cirrus, claw skyward, close the circle, cochlear, cochleate, coil,
coiled, come full circle, come up, compass, corkscrew, corkscrewy,
cosmic noise, crab, crabbing, curl, curl upwards, curlicue, cycle,
describe a circle, deviance, deviancy, deviating, deviation,
deviative, devious, deviousness, digression, digressive, dip,
discursive, dive, diving, encircle, encompass, entwine, evolute,
excursion, excursive, excursus, feather, fishtail, fishtailing,
flank, float, fly, fly aloft, gain altitude, galactic circle,
galactic cluster, galactic coordinates, galactic latitude,
galactic longitude, galactic nebula, galactic noise, galactic pole,
galaxy, girdle, girdle the globe, glide, go about, go around,
go round, go the round, go up, grow up, gyre, gyring, hang,
helical, helicoid, helix, hover, indirect, indirection, involute,
island universe, kink, kite, lap, leave the ground, levitate, loom,
loop, make a circuit, meandering, mount, nose dive, oblique, orbit,
orbital, orbiting, out-of-the-way, plane, plow, poise, porpoise,
power dive, pull out, pull up, pull-up, pullout, push down,
pushdown, rear, rear up, revolve, ringlet, rise, rise up, roll,
rolling, rotary, round, roundabout, roundaboutness, rounding,
screw, screw-shaped, scroll, scrolled, sideslip, skid, skirt, soar,
spheroidal galaxy, spin, spiral galaxy, spiral nebula, spiraling,
spire, spiroid, stall, stand up, stunt, stunting, supergalaxy,
surge, surround, swarm up, sweep up, swirl, tactical maneuvers,
take off, tendril, tower, turbinal, turbinate, turn, turning,
twine, twirl, twist, undulate, up, upgo, upgrow, upheave, uprise,
upspin, upstream, upsurge, upswarm, upwind, verticillate, volplane,
volute, voluted, volution, vortex, wheel, wheeling, whirl, whorl,
whorled, wreathe, yaw, zoom


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  • SPIRAL Definition Meaning - Merriam-Webster
    : the path of a point in a plane moving around a central point while continuously receding from or approaching it : a three-dimensional curve (such as a helix) with one or more turns about an axis : a single turn or coil in a spiral object : to form into a spiral : to cause to spiral
  • SPIRAL | English meaning - Cambridge Dictionary
    SPIRAL definition: 1 a shape made up of curves, each one above or wider than the one before: 2 a situation in which… Learn more
  • 22 Powerful Spiral Symbols Their Deeper Symbolism - OutofStress
    In this article, let’s explore 22 powerful spiral symbols and delve into the profound meanings that they represent 1 Clockwise Spiral A spiral that spins clockwise (from the inside-out) represents growth, expansion, evolution, harmony and cosmic energy
  • SPIRAL definition and meaning | Collins English Dictionary
    A spiral is a shape which winds round and round, with each curve above or outside the previous one
  • Spiral - Math. net
    Spiral A 2D spiral is an open curve that revolves around a fixed central point, called the center, that moves farther away from the center as it revolves Below are three different types of spirals Spirals exist in nature and man-made objects The spiral galaxy and a seashell shown in the first two figures below are spiral shaped
  • What is Spiral Model in Software Engineering? - GeeksforGeeks
    Spiral Model is a valuable choice for software development projects where risk management is on high priority Spiral Model deliver high-quality software by promoting risk identification, iterative development and continuous client feedback When a project is vast in software engineering, a spiral model is utilized
  • Spiral - Official Trailer - IMDb
    Working in the shadow of his father, an esteemed police veteran (Samuel L Jackson), brash Detective Ezekiel "Zeke" Banks (Chris Rock) and his rookie partner (Max Minghella) take charge of a grisly investigation into murders that are eerily reminiscent of the city's gruesome past
  • Spiral: From The Book of Saw | Official Movie Site | Lionsgate
    A sadistic mastermind unleashes a twisted form of justice in SPIRAL, the terrifying new chapter from the book of SAW Working in the shadow of an esteemed police veteran (Samuel L Jackson), brash Detective Ezekiel “Zeke” Banks (Chris Rock) and his rookie partner (Max Minghella) take charge of a…
  • Spiral | Definition, Examples, Facts | Britannica
    spiral, plane curve that, in general, winds around a point while moving ever farther from the point Many kinds of spirals are known, the first dating from the days of ancient Greece The curves are observed in nature, and human beings have used them in machines and in ornament, notably architectural—for example, the whorl in an Ionic capital
  • SPIRAL Definition Meaning | Dictionary. com
    Spiral definition: a plane curve generated by a point moving around a fixed point while constantly receding from or approaching it See examples of SPIRAL used in a sentence





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