spiral : Idioms & Phrases

Index

concho-spiral

Con`cho-spi"ral noun
Definitions
  1. A kind of spiral curve found in certain univalve shells. Agassiz.
Webster 1913

deflationary spiral

  • noun an episode of deflation in which prices and wages decrease at an increasing rate and currency gains in value
WordNet

Equiangular spiral

  • a plane curve which cuts all its generatrices at the same angle. Same as Logarithmic spiral, under Logarithmic.
Webster 1913

Hyperbolic spiral

  • (Math.), a spiral curve, the law of which is, that the distance from the pole to the generating point varies inversely as the angle swept over by the radius vector.
Webster 1913

inflationary spiral

  • noun an episode of inflation in which prices and wages increase at an increasing rate and currency rapidly loses value
WordNet

Logarithmic spiral

  • a spiral curve such that radii drawn from its pole or eye at equal angles with each other are in continual proportion. See Spiral.
Webster 1913

Parabolic spiral

  • a spiral curve conceived to be formed by the periphery of a semiparabola when its axis is wrapped about a circle; also, any other spiral curve having an analogy to the parabola.
Webster 1913

spiral bandage

  • noun an oblique bandage in which successive turns overlap preceding turns
WordNet

spiral galaxy

  • noun a galaxy having a spiral structure; arms containing younger stars spiral out from old stars at the center
    spiral galaxy.
WordNet

Spiral gear, ∨ 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.
Webster 1913

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.
Webster 1913

spiral nebula

  • noun a galaxy having a spiral structure; arms containing younger stars spiral out from old stars at the center
    spiral galaxy.
WordNet

Spiral of Archimedes

  • a spiral the law of which is that the generatrix moves uniformly along the revolving line, which also moves uniformly.
Webster 1913

Spiral operculum

  • an operculum whih has spiral lines of growth.
Webster 1913

spiral ratchet screwdriver

  • noun a screwdriver with a ratchet (so the blade turns in only one direction) and a spiral in the handle (so the blade rotates) with downward pressure on the handle
    ratchet screwdriver.
WordNet

Spiral shell

  • any shell in which the whorls form a spiral or helix.
Webster 1913

Spiral spring

  • noun a spring that is wound like a spiral
WordNet
  • . See the Note under Spring, n., 4.
Webster 1913

spiral-shelled

  • adjective satellite having a shell that forms a spiral
WordNet