| a. | 1. | ||||
| 1. | Spiral; curved, like the spire of a univalve shell. | ||||
| 2. | (Zool.) Shaped like a snail shell; pertaining to the
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| n. | 1. | (Geom.) A warped surface which may be generated by a straight line moving in such a manner that every point of the line shall have a uniform motion in the direction of another fixed straight line, and at the same time a uniform angular motion about it. | |||