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Winding or circling round a center or pole and gradually
receding from it; as, the spiral curve of a watch spring. |
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Winding round a cylinder or imaginary axis, and at the same
time rising or advancing forward; winding like the thread of a screw;
helical. |
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Of or pertaining to a spiral; like a spiral. |
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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. |
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Anything which has a spiral form, as a spiral shell. |
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